2 Unix SMB/CIFS implementation.
3 file opening and share modes
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2004
6 Copyright (C) Volker Lendecke 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "system/filesys.h"
25 #include "smbd/smbd.h"
26 #include "smbd/globals.h"
27 #include "fake_file.h"
28 #include "../libcli/security/security.h"
29 #include "../librpc/gen_ndr/ndr_security.h"
30 #include "../librpc/gen_ndr/open_files.h"
35 extern const struct generic_mapping file_generic_mapping
;
37 struct deferred_open_record
{
38 bool delayed_for_oplocks
;
43 /****************************************************************************
44 If the requester wanted DELETE_ACCESS and was rejected because
45 the file ACL didn't include DELETE_ACCESS, see if the parent ACL
47 ****************************************************************************/
49 static bool parent_override_delete(connection_struct
*conn
,
50 const struct smb_filename
*smb_fname
,
52 uint32_t rejected_mask
)
54 if ((access_mask
& DELETE_ACCESS
) &&
55 (rejected_mask
& DELETE_ACCESS
) &&
56 can_delete_file_in_directory(conn
, smb_fname
)) {
62 /****************************************************************************
63 Check if we have open rights.
64 ****************************************************************************/
66 NTSTATUS
smbd_check_access_rights(struct connection_struct
*conn
,
67 const struct smb_filename
*smb_fname
,
71 /* Check if we have rights to open. */
73 struct security_descriptor
*sd
= NULL
;
74 uint32_t rejected_share_access
;
75 uint32_t rejected_mask
= access_mask
;
77 rejected_share_access
= access_mask
& ~(conn
->share_access
);
79 if (rejected_share_access
) {
80 DEBUG(10, ("smbd_check_access_rights: rejected share access 0x%x "
82 (unsigned int)access_mask
,
83 smb_fname_str_dbg(smb_fname
),
84 (unsigned int)rejected_share_access
));
85 return NT_STATUS_ACCESS_DENIED
;
88 if (!use_privs
&& get_current_uid(conn
) == (uid_t
)0) {
89 /* I'm sorry sir, I didn't know you were root... */
90 DEBUG(10,("smbd_check_access_rights: root override "
91 "on %s. Granting 0x%x\n",
92 smb_fname_str_dbg(smb_fname
),
93 (unsigned int)access_mask
));
97 if ((access_mask
& DELETE_ACCESS
) && !lp_acl_check_permissions(SNUM(conn
))) {
98 DEBUG(10,("smbd_check_access_rights: not checking ACL "
99 "on DELETE_ACCESS on file %s. Granting 0x%x\n",
100 smb_fname_str_dbg(smb_fname
),
101 (unsigned int)access_mask
));
105 if (access_mask
== DELETE_ACCESS
&&
106 VALID_STAT(smb_fname
->st
) &&
107 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
108 /* We can always delete a symlink. */
109 DEBUG(10,("smbd_check_access_rights: not checking ACL "
110 "on DELETE_ACCESS on symlink %s.\n",
111 smb_fname_str_dbg(smb_fname
) ));
115 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
120 if (!NT_STATUS_IS_OK(status
)) {
121 DEBUG(10, ("smbd_check_access_rights: Could not get acl "
123 smb_fname_str_dbg(smb_fname
),
126 if (NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
134 * Never test FILE_READ_ATTRIBUTES. se_file_access_check() also takes care of
135 * owner WRITE_DAC and READ_CONTROL.
137 status
= se_file_access_check(sd
,
138 get_current_nttok(conn
),
140 (access_mask
& ~FILE_READ_ATTRIBUTES
),
143 DEBUG(10,("smbd_check_access_rights: file %s requesting "
144 "0x%x returning 0x%x (%s)\n",
145 smb_fname_str_dbg(smb_fname
),
146 (unsigned int)access_mask
,
147 (unsigned int)rejected_mask
,
148 nt_errstr(status
) ));
150 if (!NT_STATUS_IS_OK(status
)) {
151 if (DEBUGLEVEL
>= 10) {
152 DEBUG(10,("smbd_check_access_rights: acl for %s is:\n",
153 smb_fname_str_dbg(smb_fname
) ));
154 NDR_PRINT_DEBUG(security_descriptor
, sd
);
160 if (NT_STATUS_IS_OK(status
) ||
161 !NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
)) {
165 /* Here we know status == NT_STATUS_ACCESS_DENIED. */
169 if ((access_mask
& FILE_WRITE_ATTRIBUTES
) &&
170 (rejected_mask
& FILE_WRITE_ATTRIBUTES
) &&
171 !lp_store_dos_attributes(SNUM(conn
)) &&
172 (lp_map_readonly(SNUM(conn
)) ||
173 lp_map_archive(SNUM(conn
)) ||
174 lp_map_hidden(SNUM(conn
)) ||
175 lp_map_system(SNUM(conn
)))) {
176 rejected_mask
&= ~FILE_WRITE_ATTRIBUTES
;
178 DEBUG(10,("smbd_check_access_rights: "
180 "FILE_WRITE_ATTRIBUTES "
182 smb_fname_str_dbg(smb_fname
)));
185 if (parent_override_delete(conn
,
189 /* Were we trying to do an open
190 * for delete and didn't get DELETE
191 * access (only) ? Check if the
192 * directory allows DELETE_CHILD.
194 * http://blogs.msdn.com/oldnewthing/archive/2004/06/04/148426.aspx
197 rejected_mask
&= ~DELETE_ACCESS
;
199 DEBUG(10,("smbd_check_access_rights: "
203 smb_fname_str_dbg(smb_fname
)));
206 if (rejected_mask
!= 0) {
207 return NT_STATUS_ACCESS_DENIED
;
212 static NTSTATUS
check_parent_access(struct connection_struct
*conn
,
213 struct smb_filename
*smb_fname
,
214 uint32_t access_mask
)
217 char *parent_dir
= NULL
;
218 struct security_descriptor
*parent_sd
= NULL
;
219 uint32_t access_granted
= 0;
221 if (!parent_dirname(talloc_tos(),
222 smb_fname
->base_name
,
225 return NT_STATUS_NO_MEMORY
;
228 if (get_current_uid(conn
) == (uid_t
)0) {
229 /* I'm sorry sir, I didn't know you were root... */
230 DEBUG(10,("check_parent_access: root override "
231 "on %s. Granting 0x%x\n",
232 smb_fname_str_dbg(smb_fname
),
233 (unsigned int)access_mask
));
237 status
= SMB_VFS_GET_NT_ACL(conn
,
242 if (!NT_STATUS_IS_OK(status
)) {
243 DEBUG(5,("check_parent_access: SMB_VFS_GET_NT_ACL failed for "
244 "%s with error %s\n",
251 * Never test FILE_READ_ATTRIBUTES. se_file_access_check() also takes care of
252 * owner WRITE_DAC and READ_CONTROL.
254 status
= se_file_access_check(parent_sd
,
255 get_current_nttok(conn
),
257 (access_mask
& ~FILE_READ_ATTRIBUTES
),
259 if(!NT_STATUS_IS_OK(status
)) {
260 DEBUG(5,("check_parent_access: access check "
261 "on directory %s for "
262 "path %s for mask 0x%x returned (0x%x) %s\n",
264 smb_fname
->base_name
,
267 nt_errstr(status
) ));
274 /****************************************************************************
275 fd support routines - attempt to do a dos_open.
276 ****************************************************************************/
278 NTSTATUS
fd_open(struct connection_struct
*conn
,
283 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
284 NTSTATUS status
= NT_STATUS_OK
;
288 * Never follow symlinks on a POSIX client. The
289 * client should be doing this.
292 if (fsp
->posix_open
|| !lp_symlinks(SNUM(conn
))) {
297 fsp
->fh
->fd
= SMB_VFS_OPEN(conn
, smb_fname
, fsp
, flags
, mode
);
298 if (fsp
->fh
->fd
== -1) {
299 int posix_errno
= errno
;
301 #if defined(ENOTSUP) && defined(OSF1)
302 /* handle special Tru64 errno */
303 if (errno
== ENOTSUP
) {
308 /* fix broken NetBSD errno */
309 if (errno
== EFTYPE
) {
313 /* fix broken FreeBSD errno */
314 if (errno
== EMLINK
) {
317 #endif /* O_NOFOLLOW */
318 status
= map_nt_error_from_unix(posix_errno
);
319 if (errno
== EMFILE
) {
320 static time_t last_warned
= 0L;
322 if (time((time_t *) NULL
) > last_warned
) {
323 DEBUG(0,("Too many open files, unable "
324 "to open more! smbd's max "
326 lp_max_open_files()));
327 last_warned
= time((time_t *) NULL
);
333 DEBUG(10,("fd_open: name %s, flags = 0%o mode = 0%o, fd = %d. %s\n",
334 smb_fname_str_dbg(smb_fname
), flags
, (int)mode
, fsp
->fh
->fd
,
335 (fsp
->fh
->fd
== -1) ? strerror(errno
) : "" ));
340 /****************************************************************************
341 Close the file associated with a fsp.
342 ****************************************************************************/
344 NTSTATUS
fd_close(files_struct
*fsp
)
351 if (fsp
->fh
->fd
== -1) {
352 return NT_STATUS_OK
; /* What we used to call a stat open. */
354 if (fsp
->fh
->ref_count
> 1) {
355 return NT_STATUS_OK
; /* Shared handle. Only close last reference. */
358 ret
= SMB_VFS_CLOSE(fsp
);
361 return map_nt_error_from_unix(errno
);
366 /****************************************************************************
367 Change the ownership of a file to that of the parent directory.
368 Do this by fd if possible.
369 ****************************************************************************/
371 void change_file_owner_to_parent(connection_struct
*conn
,
372 const char *inherit_from_dir
,
375 struct smb_filename
*smb_fname_parent
= NULL
;
379 status
= create_synthetic_smb_fname(talloc_tos(), inherit_from_dir
,
380 NULL
, NULL
, &smb_fname_parent
);
381 if (!NT_STATUS_IS_OK(status
)) {
385 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
387 DEBUG(0,("change_file_owner_to_parent: failed to stat parent "
388 "directory %s. Error was %s\n",
389 smb_fname_str_dbg(smb_fname_parent
),
391 TALLOC_FREE(smb_fname_parent
);
395 if (smb_fname_parent
->st
.st_ex_uid
== fsp
->fsp_name
->st
.st_ex_uid
) {
396 /* Already this uid - no need to change. */
397 DEBUG(10,("change_file_owner_to_parent: file %s "
398 "is already owned by uid %d\n",
400 (int)fsp
->fsp_name
->st
.st_ex_uid
));
401 TALLOC_FREE(smb_fname_parent
);
406 ret
= SMB_VFS_FCHOWN(fsp
, smb_fname_parent
->st
.st_ex_uid
, (gid_t
)-1);
409 DEBUG(0,("change_file_owner_to_parent: failed to fchown "
410 "file %s to parent directory uid %u. Error "
411 "was %s\n", fsp_str_dbg(fsp
),
412 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
415 DEBUG(10,("change_file_owner_to_parent: changed new file %s to "
416 "parent directory uid %u.\n", fsp_str_dbg(fsp
),
417 (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
418 /* Ensure the uid entry is updated. */
419 fsp
->fsp_name
->st
.st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
422 TALLOC_FREE(smb_fname_parent
);
425 NTSTATUS
change_dir_owner_to_parent(connection_struct
*conn
,
426 const char *inherit_from_dir
,
428 SMB_STRUCT_STAT
*psbuf
)
430 struct smb_filename
*smb_fname_parent
= NULL
;
431 struct smb_filename
*smb_fname_cwd
= NULL
;
432 char *saved_dir
= NULL
;
433 TALLOC_CTX
*ctx
= talloc_tos();
434 NTSTATUS status
= NT_STATUS_OK
;
437 status
= create_synthetic_smb_fname(ctx
, inherit_from_dir
, NULL
, NULL
,
439 if (!NT_STATUS_IS_OK(status
)) {
443 ret
= SMB_VFS_STAT(conn
, smb_fname_parent
);
445 status
= map_nt_error_from_unix(errno
);
446 DEBUG(0,("change_dir_owner_to_parent: failed to stat parent "
447 "directory %s. Error was %s\n",
448 smb_fname_str_dbg(smb_fname_parent
),
453 /* We've already done an lstat into psbuf, and we know it's a
454 directory. If we can cd into the directory and the dev/ino
455 are the same then we can safely chown without races as
456 we're locking the directory in place by being in it. This
457 should work on any UNIX (thanks tridge :-). JRA.
460 saved_dir
= vfs_GetWd(ctx
,conn
);
462 status
= map_nt_error_from_unix(errno
);
463 DEBUG(0,("change_dir_owner_to_parent: failed to get "
464 "current working directory. Error was %s\n",
469 /* Chdir into the new path. */
470 if (vfs_ChDir(conn
, fname
) == -1) {
471 status
= map_nt_error_from_unix(errno
);
472 DEBUG(0,("change_dir_owner_to_parent: failed to change "
473 "current working directory to %s. Error "
474 "was %s\n", fname
, strerror(errno
) ));
478 status
= create_synthetic_smb_fname(ctx
, ".", NULL
, NULL
,
480 if (!NT_STATUS_IS_OK(status
)) {
484 ret
= SMB_VFS_STAT(conn
, smb_fname_cwd
);
486 status
= map_nt_error_from_unix(errno
);
487 DEBUG(0,("change_dir_owner_to_parent: failed to stat "
488 "directory '.' (%s) Error was %s\n",
489 fname
, strerror(errno
)));
493 /* Ensure we're pointing at the same place. */
494 if (smb_fname_cwd
->st
.st_ex_dev
!= psbuf
->st_ex_dev
||
495 smb_fname_cwd
->st
.st_ex_ino
!= psbuf
->st_ex_ino
) {
496 DEBUG(0,("change_dir_owner_to_parent: "
497 "device/inode on directory %s changed. "
498 "Refusing to chown !\n", fname
));
499 status
= NT_STATUS_ACCESS_DENIED
;
503 if (smb_fname_parent
->st
.st_ex_uid
== smb_fname_cwd
->st
.st_ex_uid
) {
504 /* Already this uid - no need to change. */
505 DEBUG(10,("change_dir_owner_to_parent: directory %s "
506 "is already owned by uid %d\n",
508 (int)smb_fname_cwd
->st
.st_ex_uid
));
509 status
= NT_STATUS_OK
;
514 ret
= SMB_VFS_LCHOWN(conn
, ".", smb_fname_parent
->st
.st_ex_uid
,
518 status
= map_nt_error_from_unix(errno
);
519 DEBUG(10,("change_dir_owner_to_parent: failed to chown "
520 "directory %s to parent directory uid %u. "
521 "Error was %s\n", fname
,
522 (unsigned int)smb_fname_parent
->st
.st_ex_uid
,
525 DEBUG(10,("change_dir_owner_to_parent: changed ownership of new "
526 "directory %s to parent directory uid %u.\n",
527 fname
, (unsigned int)smb_fname_parent
->st
.st_ex_uid
));
528 /* Ensure the uid entry is updated. */
529 psbuf
->st_ex_uid
= smb_fname_parent
->st
.st_ex_uid
;
533 vfs_ChDir(conn
,saved_dir
);
535 TALLOC_FREE(smb_fname_parent
);
536 TALLOC_FREE(smb_fname_cwd
);
540 /****************************************************************************
541 Open a file - returning a guaranteed ATOMIC indication of if the
542 file was created or not.
543 ****************************************************************************/
545 static NTSTATUS
fd_open_atomic(struct connection_struct
*conn
,
551 NTSTATUS status
= NT_STATUS_UNSUCCESSFUL
;
552 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
554 *file_created
= false;
556 if (!(flags
& O_CREAT
)) {
558 * We're not creating the file, just pass through.
560 return fd_open(conn
, fsp
, flags
, mode
);
563 if (flags
& O_EXCL
) {
565 * Fail if already exists, just pass through.
567 status
= fd_open(conn
, fsp
, flags
, mode
);
570 * Here we've opened with O_CREAT|O_EXCL. If that went
571 * NT_STATUS_OK, we *know* we created this file.
573 *file_created
= NT_STATUS_IS_OK(status
);
579 * Now it gets tricky. We have O_CREAT, but not O_EXCL.
580 * To know absolutely if we created the file or not,
581 * we can never call O_CREAT without O_EXCL. So if
582 * we think the file existed, try without O_CREAT|O_EXCL.
583 * If we think the file didn't exist, try with
584 * O_CREAT|O_EXCL. Keep bouncing between these two
585 * requests until either the file is created, or
586 * opened. Either way, we keep going until we get
587 * a returnable result (error, or open/create).
591 int curr_flags
= flags
;
594 /* Just try open, do not create. */
595 curr_flags
&= ~(O_CREAT
);
596 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
597 if (NT_STATUS_EQUAL(status
,
598 NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
600 * Someone deleted it in the meantime.
603 file_existed
= false;
604 DEBUG(10,("fd_open_atomic: file %s existed. "
606 smb_fname_str_dbg(fsp
->fsp_name
)));
610 /* Try create exclusively, fail if it exists. */
611 curr_flags
|= O_EXCL
;
612 status
= fd_open(conn
, fsp
, curr_flags
, mode
);
613 if (NT_STATUS_EQUAL(status
,
614 NT_STATUS_OBJECT_NAME_COLLISION
)) {
616 * Someone created it in the meantime.
617 * Retry without O_CREAT.
620 DEBUG(10,("fd_open_atomic: file %s "
621 "did not exist. Retry.\n",
622 smb_fname_str_dbg(fsp
->fsp_name
)));
625 if (NT_STATUS_IS_OK(status
)) {
627 * Here we've opened with O_CREAT|O_EXCL
628 * and got success. We *know* we created
631 *file_created
= true;
634 /* Create is done, or failed. */
640 /****************************************************************************
642 ****************************************************************************/
644 static NTSTATUS
open_file(files_struct
*fsp
,
645 connection_struct
*conn
,
646 struct smb_request
*req
,
647 const char *parent_dir
,
650 uint32 access_mask
, /* client requested access mask. */
651 uint32 open_access_mask
, /* what we're actually using in the open. */
652 bool *p_file_created
)
654 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
655 NTSTATUS status
= NT_STATUS_OK
;
656 int accmode
= (flags
& O_ACCMODE
);
657 int local_flags
= flags
;
658 bool file_existed
= VALID_STAT(fsp
->fsp_name
->st
);
663 /* Check permissions */
666 * This code was changed after seeing a client open request
667 * containing the open mode of (DENY_WRITE/read-only) with
668 * the 'create if not exist' bit set. The previous code
669 * would fail to open the file read only on a read-only share
670 * as it was checking the flags parameter directly against O_RDONLY,
671 * this was failing as the flags parameter was set to O_RDONLY|O_CREAT.
675 if (!CAN_WRITE(conn
)) {
676 /* It's a read-only share - fail if we wanted to write. */
677 if(accmode
!= O_RDONLY
|| (flags
& O_TRUNC
) || (flags
& O_APPEND
)) {
678 DEBUG(3,("Permission denied opening %s\n",
679 smb_fname_str_dbg(smb_fname
)));
680 return NT_STATUS_ACCESS_DENIED
;
681 } else if(flags
& O_CREAT
) {
682 /* We don't want to write - but we must make sure that
683 O_CREAT doesn't create the file if we have write
684 access into the directory.
686 flags
&= ~(O_CREAT
|O_EXCL
);
687 local_flags
&= ~(O_CREAT
|O_EXCL
);
692 * This little piece of insanity is inspired by the
693 * fact that an NT client can open a file for O_RDONLY,
694 * but set the create disposition to FILE_EXISTS_TRUNCATE.
695 * If the client *can* write to the file, then it expects to
696 * truncate the file, even though it is opening for readonly.
697 * Quicken uses this stupid trick in backup file creation...
698 * Thanks *greatly* to "David W. Chapman Jr." <dwcjr@inethouston.net>
699 * for helping track this one down. It didn't bite us in 2.0.x
700 * as we always opened files read-write in that release. JRA.
703 if ((accmode
== O_RDONLY
) && ((flags
& O_TRUNC
) == O_TRUNC
)) {
704 DEBUG(10,("open_file: truncate requested on read-only open "
705 "for file %s\n", smb_fname_str_dbg(smb_fname
)));
706 local_flags
= (flags
& ~O_ACCMODE
)|O_RDWR
;
709 if ((open_access_mask
& (FILE_READ_DATA
|FILE_WRITE_DATA
|FILE_APPEND_DATA
|FILE_EXECUTE
)) ||
710 (!file_existed
&& (local_flags
& O_CREAT
)) ||
711 ((local_flags
& O_TRUNC
) == O_TRUNC
) ) {
715 #if defined(O_NONBLOCK) && defined(S_ISFIFO)
717 * We would block on opening a FIFO with no one else on the
718 * other end. Do what we used to do and add O_NONBLOCK to the
722 if (file_existed
&& S_ISFIFO(smb_fname
->st
.st_ex_mode
)) {
723 local_flags
&= ~O_TRUNC
; /* Can't truncate a FIFO. */
724 local_flags
|= O_NONBLOCK
;
728 /* Don't create files with Microsoft wildcard characters. */
731 * wildcard characters are allowed in stream names
732 * only test the basefilename
734 wild
= fsp
->base_fsp
->fsp_name
->base_name
;
736 wild
= smb_fname
->base_name
;
738 if ((local_flags
& O_CREAT
) && !file_existed
&&
740 return NT_STATUS_OBJECT_NAME_INVALID
;
743 /* Can we access this file ? */
744 if (!fsp
->base_fsp
) {
745 /* Only do this check on non-stream open. */
747 status
= smbd_check_access_rights(conn
,
751 } else if (local_flags
& O_CREAT
){
752 status
= check_parent_access(conn
,
756 /* File didn't exist and no O_CREAT. */
757 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
759 if (!NT_STATUS_IS_OK(status
)) {
760 DEBUG(10,("open_file: "
764 "smbd_check_access_rights" :
765 "check_parent_access",
766 smb_fname_str_dbg(smb_fname
),
767 nt_errstr(status
) ));
772 /* Actually do the open */
773 status
= fd_open_atomic(conn
, fsp
, local_flags
,
774 unx_mode
, p_file_created
);
775 if (!NT_STATUS_IS_OK(status
)) {
776 DEBUG(3,("Error opening file %s (%s) (local_flags=%d) "
777 "(flags=%d)\n", smb_fname_str_dbg(smb_fname
),
778 nt_errstr(status
),local_flags
,flags
));
782 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
784 /* If we have an fd, this stat should succeed. */
785 DEBUG(0,("Error doing fstat on open file %s "
787 smb_fname_str_dbg(smb_fname
),
789 status
= map_nt_error_from_unix(errno
);
794 if (*p_file_created
) {
795 /* We created this file. */
797 bool need_re_stat
= false;
798 /* Do all inheritance work after we've
799 done a successful fstat call and filled
800 in the stat struct in fsp->fsp_name. */
802 /* Inherit the ACL if required */
803 if (lp_inherit_perms(SNUM(conn
))) {
804 inherit_access_posix_acl(conn
, parent_dir
,
805 smb_fname
->base_name
,
810 /* Change the owner if required. */
811 if (lp_inherit_owner(SNUM(conn
))) {
812 change_file_owner_to_parent(conn
, parent_dir
,
818 ret
= SMB_VFS_FSTAT(fsp
, &smb_fname
->st
);
819 /* If we have an fd, this stat should succeed. */
821 DEBUG(0,("Error doing fstat on open file %s "
823 smb_fname_str_dbg(smb_fname
),
828 notify_fname(conn
, NOTIFY_ACTION_ADDED
,
829 FILE_NOTIFY_CHANGE_FILE_NAME
,
830 smb_fname
->base_name
);
833 fsp
->fh
->fd
= -1; /* What we used to call a stat open. */
835 /* File must exist for a stat open. */
836 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
839 status
= smbd_check_access_rights(conn
,
844 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) &&
846 S_ISLNK(smb_fname
->st
.st_ex_mode
)) {
847 /* This is a POSIX stat open for delete
848 * or rename on a symlink that points
850 DEBUG(10,("open_file: allowing POSIX "
851 "open on bad symlink %s\n",
852 smb_fname_str_dbg(smb_fname
)));
853 status
= NT_STATUS_OK
;
856 if (!NT_STATUS_IS_OK(status
)) {
857 DEBUG(10,("open_file: "
858 "smbd_check_access_rights on file "
860 smb_fname_str_dbg(smb_fname
),
861 nt_errstr(status
) ));
867 * POSIX allows read-only opens of directories. We don't
868 * want to do this (we use a different code path for this)
869 * so catch a directory open and return an EISDIR. JRA.
872 if(S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
875 return NT_STATUS_FILE_IS_A_DIRECTORY
;
878 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
879 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
880 fsp
->file_pid
= req
? req
->smbpid
: 0;
881 fsp
->can_lock
= True
;
882 fsp
->can_read
= ((access_mask
& FILE_READ_DATA
) != 0);
885 ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) != 0);
886 fsp
->print_file
= NULL
;
887 fsp
->modified
= False
;
888 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
889 fsp
->is_directory
= False
;
890 if (conn
->aio_write_behind_list
&&
891 is_in_path(smb_fname
->base_name
, conn
->aio_write_behind_list
,
892 conn
->case_sensitive
)) {
893 fsp
->aio_write_behind
= True
;
896 fsp
->wcp
= NULL
; /* Write cache pointer. */
898 DEBUG(2,("%s opened file %s read=%s write=%s (numopen=%d)\n",
899 conn
->session_info
->unix_info
->unix_name
,
900 smb_fname_str_dbg(smb_fname
),
901 BOOLSTR(fsp
->can_read
), BOOLSTR(fsp
->can_write
),
902 conn
->num_files_open
));
908 /****************************************************************************
909 Check if we can open a file with a share mode.
910 Returns True if conflict, False if not.
911 ****************************************************************************/
913 static bool share_conflict(struct share_mode_entry
*entry
,
917 DEBUG(10,("share_conflict: entry->access_mask = 0x%x, "
918 "entry->share_access = 0x%x, "
919 "entry->private_options = 0x%x\n",
920 (unsigned int)entry
->access_mask
,
921 (unsigned int)entry
->share_access
,
922 (unsigned int)entry
->private_options
));
924 if (server_id_is_disconnected(&entry
->pid
)) {
926 * note: cleanup should have been done by
927 * delay_for_batch_oplocks()
932 DEBUG(10,("share_conflict: access_mask = 0x%x, share_access = 0x%x\n",
933 (unsigned int)access_mask
, (unsigned int)share_access
));
935 if ((entry
->access_mask
& (FILE_WRITE_DATA
|
939 DELETE_ACCESS
)) == 0) {
940 DEBUG(10,("share_conflict: No conflict due to "
941 "entry->access_mask = 0x%x\n",
942 (unsigned int)entry
->access_mask
));
946 if ((access_mask
& (FILE_WRITE_DATA
|
950 DELETE_ACCESS
)) == 0) {
951 DEBUG(10,("share_conflict: No conflict due to "
952 "access_mask = 0x%x\n",
953 (unsigned int)access_mask
));
957 #if 1 /* JRA TEST - Superdebug. */
958 #define CHECK_MASK(num, am, right, sa, share) \
959 DEBUG(10,("share_conflict: [%d] am (0x%x) & right (0x%x) = 0x%x\n", \
960 (unsigned int)(num), (unsigned int)(am), \
961 (unsigned int)(right), (unsigned int)(am)&(right) )); \
962 DEBUG(10,("share_conflict: [%d] sa (0x%x) & share (0x%x) = 0x%x\n", \
963 (unsigned int)(num), (unsigned int)(sa), \
964 (unsigned int)(share), (unsigned int)(sa)&(share) )); \
965 if (((am) & (right)) && !((sa) & (share))) { \
966 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
967 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
968 (unsigned int)(share) )); \
972 #define CHECK_MASK(num, am, right, sa, share) \
973 if (((am) & (right)) && !((sa) & (share))) { \
974 DEBUG(10,("share_conflict: check %d conflict am = 0x%x, right = 0x%x, \
975 sa = 0x%x, share = 0x%x\n", (num), (unsigned int)(am), (unsigned int)(right), (unsigned int)(sa), \
976 (unsigned int)(share) )); \
981 CHECK_MASK(1, entry
->access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
982 share_access
, FILE_SHARE_WRITE
);
983 CHECK_MASK(2, access_mask
, FILE_WRITE_DATA
| FILE_APPEND_DATA
,
984 entry
->share_access
, FILE_SHARE_WRITE
);
986 CHECK_MASK(3, entry
->access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
987 share_access
, FILE_SHARE_READ
);
988 CHECK_MASK(4, access_mask
, FILE_READ_DATA
| FILE_EXECUTE
,
989 entry
->share_access
, FILE_SHARE_READ
);
991 CHECK_MASK(5, entry
->access_mask
, DELETE_ACCESS
,
992 share_access
, FILE_SHARE_DELETE
);
993 CHECK_MASK(6, access_mask
, DELETE_ACCESS
,
994 entry
->share_access
, FILE_SHARE_DELETE
);
996 DEBUG(10,("share_conflict: No conflict.\n"));
1000 #if defined(DEVELOPER)
1001 static void validate_my_share_entries(struct smbd_server_connection
*sconn
,
1003 struct share_mode_entry
*share_entry
)
1005 struct server_id self
= messaging_server_id(sconn
->msg_ctx
);
1008 if (!serverid_equal(&self
, &share_entry
->pid
)) {
1012 if (is_deferred_open_entry(share_entry
) &&
1013 !open_was_deferred(sconn
, share_entry
->op_mid
)) {
1014 char *str
= talloc_asprintf(talloc_tos(),
1015 "Got a deferred entry without a request: "
1017 share_mode_str(talloc_tos(), num
, share_entry
));
1021 if (!is_valid_share_mode_entry(share_entry
)) {
1025 fsp
= file_find_dif(sconn
, share_entry
->id
,
1026 share_entry
->share_file_id
);
1028 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1029 share_mode_str(talloc_tos(), num
, share_entry
) ));
1030 smb_panic("validate_my_share_entries: Cannot match a "
1031 "share entry with an open file\n");
1034 if (is_deferred_open_entry(share_entry
)) {
1038 if ((share_entry
->op_type
== NO_OPLOCK
) &&
1039 (fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
)) {
1040 /* Someone has already written to it, but I haven't yet
1045 if (((uint16
)fsp
->oplock_type
) != share_entry
->op_type
) {
1054 DEBUG(0,("validate_my_share_entries: PANIC : %s\n",
1055 share_mode_str(talloc_tos(), num
, share_entry
) ));
1056 str
= talloc_asprintf(talloc_tos(),
1057 "validate_my_share_entries: "
1058 "file %s, oplock_type = 0x%x, op_type = 0x%x\n",
1059 fsp
->fsp_name
->base_name
,
1060 (unsigned int)fsp
->oplock_type
,
1061 (unsigned int)share_entry
->op_type
);
1067 bool is_stat_open(uint32 access_mask
)
1069 return (access_mask
&&
1070 ((access_mask
& ~(SYNCHRONIZE_ACCESS
| FILE_READ_ATTRIBUTES
|
1071 FILE_WRITE_ATTRIBUTES
))==0) &&
1072 ((access_mask
& (SYNCHRONIZE_ACCESS
|FILE_READ_ATTRIBUTES
|
1073 FILE_WRITE_ATTRIBUTES
)) != 0));
1076 /****************************************************************************
1077 Deal with share modes
1078 Invarient: Share mode must be locked on entry and exit.
1079 Returns -1 on error, or number of share modes on success (may be zero).
1080 ****************************************************************************/
1082 static NTSTATUS
open_mode_check(connection_struct
*conn
,
1083 struct share_mode_lock
*lck
,
1086 uint32 share_access
,
1087 uint32 create_options
,
1092 if(lck
->data
->num_share_modes
== 0) {
1093 return NT_STATUS_OK
;
1096 /* A delete on close prohibits everything */
1098 if (is_delete_on_close_set(lck
, name_hash
)) {
1100 * Check the delete on close token
1101 * is valid. It could have been left
1102 * after a server crash.
1104 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1105 if (!share_mode_stale_pid(lck
->data
, i
)) {
1107 *file_existed
= true;
1109 return NT_STATUS_DELETE_PENDING
;
1112 return NT_STATUS_OK
;
1115 if (is_stat_open(access_mask
)) {
1116 /* Stat open that doesn't trigger oplock breaks or share mode
1117 * checks... ! JRA. */
1118 return NT_STATUS_OK
;
1122 * Check if the share modes will give us access.
1125 #if defined(DEVELOPER)
1126 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1127 validate_my_share_entries(conn
->sconn
, i
,
1128 &lck
->data
->share_modes
[i
]);
1132 /* Now we check the share modes, after any oplock breaks. */
1133 for(i
= 0; i
< lck
->data
->num_share_modes
; i
++) {
1135 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1139 /* someone else has a share lock on it, check to see if we can
1141 if (share_conflict(&lck
->data
->share_modes
[i
],
1142 access_mask
, share_access
)) {
1144 if (share_mode_stale_pid(lck
->data
, i
)) {
1148 *file_existed
= true;
1150 return NT_STATUS_SHARING_VIOLATION
;
1154 if (lck
->data
->num_share_modes
!= 0) {
1155 *file_existed
= true;
1158 return NT_STATUS_OK
;
1162 * Send a break message to the oplock holder and delay the open for
1166 static NTSTATUS
send_break_message(files_struct
*fsp
,
1167 struct share_mode_entry
*exclusive
,
1172 char msg
[MSG_SMB_SHARE_MODE_ENTRY_SIZE
];
1174 DEBUG(10, ("Sending break request to PID %s\n",
1175 procid_str_static(&exclusive
->pid
)));
1176 exclusive
->op_mid
= mid
;
1178 /* Create the message. */
1179 share_mode_entry_to_message(msg
, exclusive
);
1181 /* Add in the FORCE_OPLOCK_BREAK_TO_NONE bit in the message if set. We
1182 don't want this set in the share mode struct pointed to by lck. */
1184 if (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
) {
1185 SSVAL(msg
,OP_BREAK_MSG_OP_TYPE_OFFSET
,
1186 exclusive
->op_type
| FORCE_OPLOCK_BREAK_TO_NONE
);
1189 status
= messaging_send_buf(fsp
->conn
->sconn
->msg_ctx
, exclusive
->pid
,
1190 MSG_SMB_BREAK_REQUEST
,
1192 MSG_SMB_SHARE_MODE_ENTRY_SIZE
);
1193 if (!NT_STATUS_IS_OK(status
)) {
1194 DEBUG(3, ("Could not send oplock break message: %s\n",
1195 nt_errstr(status
)));
1202 * Return share_mode_entry pointers for :
1203 * 1). Batch oplock entry.
1204 * 2). Batch or exclusive oplock entry (may be identical to #1).
1205 * bool have_level2_oplock
1206 * bool have_no_oplock.
1207 * Do internal consistency checks on the share mode for a file.
1210 static void find_oplock_types(files_struct
*fsp
,
1212 const struct share_mode_lock
*lck
,
1213 struct share_mode_entry
**pp_batch
,
1214 struct share_mode_entry
**pp_ex_or_batch
,
1216 bool *got_no_oplock
)
1221 *pp_ex_or_batch
= NULL
;
1222 *got_level2
= false;
1223 *got_no_oplock
= false;
1225 /* Ignore stat or internal opens, as is done in
1226 delay_for_batch_oplocks() and
1227 delay_for_exclusive_oplocks().
1229 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1233 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1234 if (!is_valid_share_mode_entry(&lck
->data
->share_modes
[i
])) {
1238 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
&&
1239 is_stat_open(lck
->data
->share_modes
[i
].access_mask
)) {
1240 /* We ignore stat opens in the table - they
1241 always have NO_OPLOCK and never get or
1242 cause breaks. JRA. */
1246 if (BATCH_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1247 /* batch - can only be one. */
1248 if (share_mode_stale_pid(lck
->data
, i
)) {
1249 DEBUG(10, ("Found stale batch oplock\n"));
1252 if (*pp_ex_or_batch
|| *pp_batch
|| *got_level2
|| *got_no_oplock
) {
1253 smb_panic("Bad batch oplock entry.");
1255 *pp_batch
= &lck
->data
->share_modes
[i
];
1258 if (EXCLUSIVE_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1259 if (share_mode_stale_pid(lck
->data
, i
)) {
1260 DEBUG(10, ("Found stale duplicate oplock\n"));
1263 /* Exclusive or batch - can only be one. */
1264 if (*pp_ex_or_batch
|| *got_level2
|| *got_no_oplock
) {
1265 smb_panic("Bad exclusive or batch oplock entry.");
1267 *pp_ex_or_batch
= &lck
->data
->share_modes
[i
];
1270 if (LEVEL_II_OPLOCK_TYPE(lck
->data
->share_modes
[i
].op_type
)) {
1271 if (*pp_batch
|| *pp_ex_or_batch
) {
1272 if (share_mode_stale_pid(lck
->data
, i
)) {
1273 DEBUG(10, ("Found stale LevelII "
1277 smb_panic("Bad levelII oplock entry.");
1282 if (lck
->data
->share_modes
[i
].op_type
== NO_OPLOCK
) {
1283 if (*pp_batch
|| *pp_ex_or_batch
) {
1284 if (share_mode_stale_pid(lck
->data
, i
)) {
1285 DEBUG(10, ("Found stale NO_OPLOCK "
1289 smb_panic("Bad no oplock entry.");
1291 *got_no_oplock
= true;
1296 static bool delay_for_batch_oplocks(files_struct
*fsp
,
1299 struct share_mode_entry
*batch_entry
)
1301 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1304 if (batch_entry
== NULL
) {
1308 if (server_id_is_disconnected(&batch_entry
->pid
)) {
1311 * This could be achieved by sending a break message
1312 * to ourselves. Special considerations for files
1313 * with delete_on_close flag set!
1315 * For now we keep it simple and do not
1316 * allow delete on close for durable handles.
1321 /* Found a batch oplock */
1322 send_break_message(fsp
, batch_entry
, mid
, oplock_request
);
1326 static bool delay_for_exclusive_oplocks(files_struct
*fsp
,
1329 struct share_mode_entry
*ex_entry
)
1331 if ((oplock_request
& INTERNAL_OPEN_ONLY
) || is_stat_open(fsp
->access_mask
)) {
1334 if (ex_entry
== NULL
) {
1338 if (server_id_is_disconnected(&ex_entry
->pid
)) {
1340 * since only durable handles can get disconnected,
1341 * and we can only get durable handles with batch oplocks,
1342 * this should actually never be reached...
1347 send_break_message(fsp
, ex_entry
, mid
, oplock_request
);
1351 static bool file_has_brlocks(files_struct
*fsp
)
1353 struct byte_range_lock
*br_lck
;
1355 br_lck
= brl_get_locks_readonly(fsp
);
1359 return br_lck
->num_locks
> 0 ? true : false;
1362 static void grant_fsp_oplock_type(files_struct
*fsp
,
1364 bool got_level2_oplock
,
1365 bool got_a_none_oplock
)
1367 bool allow_level2
= (global_client_caps
& CAP_LEVEL_II_OPLOCKS
) &&
1368 lp_level2_oplocks(SNUM(fsp
->conn
));
1370 /* Start by granting what the client asked for,
1371 but ensure no SAMBA_PRIVATE bits can be set. */
1372 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
1374 if (oplock_request
& INTERNAL_OPEN_ONLY
) {
1375 /* No oplocks on internal open. */
1376 fsp
->oplock_type
= NO_OPLOCK
;
1377 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1378 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1382 if (lp_locking(fsp
->conn
->params
) && file_has_brlocks(fsp
)) {
1383 DEBUG(10,("grant_fsp_oplock_type: file %s has byte range locks\n",
1385 fsp
->oplock_type
= NO_OPLOCK
;
1388 if (is_stat_open(fsp
->access_mask
)) {
1389 /* Leave the value already set. */
1390 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1391 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1396 * Match what was requested (fsp->oplock_type) with
1397 * what was found in the existing share modes.
1400 if (got_a_none_oplock
) {
1401 fsp
->oplock_type
= NO_OPLOCK
;
1402 } else if (got_level2_oplock
) {
1403 if (fsp
->oplock_type
== NO_OPLOCK
||
1404 fsp
->oplock_type
== FAKE_LEVEL_II_OPLOCK
) {
1405 /* Store a level2 oplock, but don't tell the client */
1406 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1408 fsp
->oplock_type
= LEVEL_II_OPLOCK
;
1411 /* All share_mode_entries are placeholders or deferred.
1412 * Silently upgrade to fake levelII if the client didn't
1413 * ask for an oplock. */
1414 if (fsp
->oplock_type
== NO_OPLOCK
) {
1415 /* Store a level2 oplock, but don't tell the client */
1416 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1421 * Don't grant level2 to clients that don't want them
1422 * or if we've turned them off.
1424 if (fsp
->oplock_type
== LEVEL_II_OPLOCK
&& !allow_level2
) {
1425 fsp
->oplock_type
= FAKE_LEVEL_II_OPLOCK
;
1428 DEBUG(10,("grant_fsp_oplock_type: oplock type 0x%x on file %s\n",
1429 fsp
->oplock_type
, fsp_str_dbg(fsp
)));
1432 static bool request_timed_out(struct timeval request_time
,
1433 struct timeval timeout
)
1435 struct timeval now
, end_time
;
1437 end_time
= timeval_sum(&request_time
, &timeout
);
1438 return (timeval_compare(&end_time
, &now
) < 0);
1441 /****************************************************************************
1442 Handle the 1 second delay in returning a SHARING_VIOLATION error.
1443 ****************************************************************************/
1445 static void defer_open(struct share_mode_lock
*lck
,
1446 struct timeval request_time
,
1447 struct timeval timeout
,
1448 struct smb_request
*req
,
1449 struct deferred_open_record
*state
)
1451 struct server_id self
= messaging_server_id(req
->sconn
->msg_ctx
);
1453 /* Paranoia check */
1458 for (i
=0; i
<lck
->data
->num_share_modes
; i
++) {
1459 struct share_mode_entry
*e
= &lck
->data
->share_modes
[i
];
1461 if (is_deferred_open_entry(e
) &&
1462 serverid_equal(&self
, &e
->pid
) &&
1463 (e
->op_mid
== req
->mid
)) {
1464 DEBUG(0, ("Trying to defer an already deferred "
1465 "request: mid=%llu, exiting\n",
1466 (unsigned long long)req
->mid
));
1468 exit_server("attempt to defer a deferred request");
1473 /* End paranoia check */
1475 DEBUG(10,("defer_open_sharing_error: time [%u.%06u] adding deferred "
1476 "open entry for mid %llu\n",
1477 (unsigned int)request_time
.tv_sec
,
1478 (unsigned int)request_time
.tv_usec
,
1479 (unsigned long long)req
->mid
));
1481 if (!push_deferred_open_message_smb(req
, request_time
, timeout
,
1482 state
->id
, (char *)state
, sizeof(*state
))) {
1484 exit_server("push_deferred_open_message_smb failed");
1487 add_deferred_open(lck
, req
->mid
, request_time
, self
, state
->id
);
1492 /****************************************************************************
1493 On overwrite open ensure that the attributes match.
1494 ****************************************************************************/
1496 static bool open_match_attributes(connection_struct
*conn
,
1497 uint32 old_dos_attr
,
1498 uint32 new_dos_attr
,
1499 mode_t existing_unx_mode
,
1500 mode_t new_unx_mode
,
1501 mode_t
*returned_unx_mode
)
1503 uint32 noarch_old_dos_attr
, noarch_new_dos_attr
;
1505 noarch_old_dos_attr
= (old_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1506 noarch_new_dos_attr
= (new_dos_attr
& ~FILE_ATTRIBUTE_ARCHIVE
);
1508 if((noarch_old_dos_attr
== 0 && noarch_new_dos_attr
!= 0) ||
1509 (noarch_old_dos_attr
!= 0 && ((noarch_old_dos_attr
& noarch_new_dos_attr
) == noarch_old_dos_attr
))) {
1510 *returned_unx_mode
= new_unx_mode
;
1512 *returned_unx_mode
= (mode_t
)0;
1515 DEBUG(10,("open_match_attributes: old_dos_attr = 0x%x, "
1516 "existing_unx_mode = 0%o, new_dos_attr = 0x%x "
1517 "returned_unx_mode = 0%o\n",
1518 (unsigned int)old_dos_attr
,
1519 (unsigned int)existing_unx_mode
,
1520 (unsigned int)new_dos_attr
,
1521 (unsigned int)*returned_unx_mode
));
1523 /* If we're mapping SYSTEM and HIDDEN ensure they match. */
1524 if (lp_map_system(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1525 if ((old_dos_attr
& FILE_ATTRIBUTE_SYSTEM
) &&
1526 !(new_dos_attr
& FILE_ATTRIBUTE_SYSTEM
)) {
1530 if (lp_map_hidden(SNUM(conn
)) || lp_store_dos_attributes(SNUM(conn
))) {
1531 if ((old_dos_attr
& FILE_ATTRIBUTE_HIDDEN
) &&
1532 !(new_dos_attr
& FILE_ATTRIBUTE_HIDDEN
)) {
1539 /****************************************************************************
1540 Special FCB or DOS processing in the case of a sharing violation.
1541 Try and find a duplicated file handle.
1542 ****************************************************************************/
1544 static NTSTATUS
fcb_or_dos_open(struct smb_request
*req
,
1545 connection_struct
*conn
,
1546 files_struct
*fsp_to_dup_into
,
1547 const struct smb_filename
*smb_fname
,
1552 uint32 share_access
,
1553 uint32 create_options
)
1557 DEBUG(5,("fcb_or_dos_open: attempting old open semantics for "
1558 "file %s.\n", smb_fname_str_dbg(smb_fname
)));
1560 for(fsp
= file_find_di_first(conn
->sconn
, id
); fsp
;
1561 fsp
= file_find_di_next(fsp
)) {
1563 DEBUG(10,("fcb_or_dos_open: checking file %s, fd = %d, "
1564 "vuid = %llu, file_pid = %u, private_options = 0x%x "
1565 "access_mask = 0x%x\n", fsp_str_dbg(fsp
),
1566 fsp
->fh
->fd
, (unsigned long long)fsp
->vuid
,
1567 (unsigned int)fsp
->file_pid
,
1568 (unsigned int)fsp
->fh
->private_options
,
1569 (unsigned int)fsp
->access_mask
));
1571 if (fsp
->fh
->fd
!= -1 &&
1572 fsp
->vuid
== vuid
&&
1573 fsp
->file_pid
== file_pid
&&
1574 (fsp
->fh
->private_options
& (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
1575 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) &&
1576 (fsp
->access_mask
& FILE_WRITE_DATA
) &&
1577 strequal(fsp
->fsp_name
->base_name
, smb_fname
->base_name
) &&
1578 strequal(fsp
->fsp_name
->stream_name
,
1579 smb_fname
->stream_name
)) {
1580 DEBUG(10,("fcb_or_dos_open: file match\n"));
1586 return NT_STATUS_NOT_FOUND
;
1589 /* quite an insane set of semantics ... */
1590 if (is_executable(smb_fname
->base_name
) &&
1591 (fsp
->fh
->private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
)) {
1592 DEBUG(10,("fcb_or_dos_open: file fail due to is_executable.\n"));
1593 return NT_STATUS_INVALID_PARAMETER
;
1596 /* We need to duplicate this fsp. */
1597 return dup_file_fsp(req
, fsp
, access_mask
, share_access
,
1598 create_options
, fsp_to_dup_into
);
1601 static void schedule_defer_open(struct share_mode_lock
*lck
,
1602 struct timeval request_time
,
1603 struct smb_request
*req
)
1605 struct deferred_open_record state
;
1607 /* This is a relative time, added to the absolute
1608 request_time value to get the absolute timeout time.
1609 Note that if this is the second or greater time we enter
1610 this codepath for this particular request mid then
1611 request_time is left as the absolute time of the *first*
1612 time this request mid was processed. This is what allows
1613 the request to eventually time out. */
1615 struct timeval timeout
;
1617 /* Normally the smbd we asked should respond within
1618 * OPLOCK_BREAK_TIMEOUT seconds regardless of whether
1619 * the client did, give twice the timeout as a safety
1620 * measure here in case the other smbd is stuck
1621 * somewhere else. */
1623 timeout
= timeval_set(OPLOCK_BREAK_TIMEOUT
*2, 0);
1625 /* Nothing actually uses state.delayed_for_oplocks
1626 but it's handy to differentiate in debug messages
1627 between a 30 second delay due to oplock break, and
1628 a 1 second delay for share mode conflicts. */
1630 state
.delayed_for_oplocks
= True
;
1631 state
.async_open
= false;
1632 state
.id
= lck
->data
->id
;
1634 if (!request_timed_out(request_time
, timeout
)) {
1635 defer_open(lck
, request_time
, timeout
, req
, &state
);
1639 /****************************************************************************
1640 Reschedule an open call that went asynchronous.
1641 ****************************************************************************/
1643 static void schedule_async_open(struct timeval request_time
,
1644 struct smb_request
*req
)
1646 struct deferred_open_record state
;
1647 struct timeval timeout
;
1649 timeout
= timeval_set(20, 0);
1652 state
.delayed_for_oplocks
= false;
1653 state
.async_open
= true;
1655 if (!request_timed_out(request_time
, timeout
)) {
1656 defer_open(NULL
, request_time
, timeout
, req
, &state
);
1660 /****************************************************************************
1661 Work out what access_mask to use from what the client sent us.
1662 ****************************************************************************/
1664 static NTSTATUS
smbd_calculate_maximum_allowed_access(
1665 connection_struct
*conn
,
1666 const struct smb_filename
*smb_fname
,
1668 uint32_t *p_access_mask
)
1670 struct security_descriptor
*sd
;
1671 uint32_t access_granted
;
1674 if (!use_privs
&& (get_current_uid(conn
) == (uid_t
)0)) {
1675 *p_access_mask
|= FILE_GENERIC_ALL
;
1676 return NT_STATUS_OK
;
1679 status
= SMB_VFS_GET_NT_ACL(conn
, smb_fname
->base_name
,
1684 if (NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
1686 * File did not exist
1688 *p_access_mask
= FILE_GENERIC_ALL
;
1689 return NT_STATUS_OK
;
1691 if (!NT_STATUS_IS_OK(status
)) {
1692 DEBUG(10,("Could not get acl on file %s: %s\n",
1693 smb_fname_str_dbg(smb_fname
),
1694 nt_errstr(status
)));
1695 return NT_STATUS_ACCESS_DENIED
;
1699 * Never test FILE_READ_ATTRIBUTES. se_file_access_check()
1700 * also takes care of owner WRITE_DAC and READ_CONTROL.
1702 status
= se_file_access_check(sd
,
1703 get_current_nttok(conn
),
1705 (*p_access_mask
& ~FILE_READ_ATTRIBUTES
),
1710 if (!NT_STATUS_IS_OK(status
)) {
1711 DEBUG(10, ("Access denied on file %s: "
1712 "when calculating maximum access\n",
1713 smb_fname_str_dbg(smb_fname
)));
1714 return NT_STATUS_ACCESS_DENIED
;
1716 *p_access_mask
= (access_granted
| FILE_READ_ATTRIBUTES
);
1717 return NT_STATUS_OK
;
1720 NTSTATUS
smbd_calculate_access_mask(connection_struct
*conn
,
1721 const struct smb_filename
*smb_fname
,
1723 uint32_t access_mask
,
1724 uint32_t *access_mask_out
)
1727 uint32_t orig_access_mask
= access_mask
;
1728 uint32_t rejected_share_access
;
1731 * Convert GENERIC bits to specific bits.
1734 se_map_generic(&access_mask
, &file_generic_mapping
);
1736 /* Calculate MAXIMUM_ALLOWED_ACCESS if requested. */
1737 if (access_mask
& MAXIMUM_ALLOWED_ACCESS
) {
1739 status
= smbd_calculate_maximum_allowed_access(
1740 conn
, smb_fname
, use_privs
, &access_mask
);
1742 if (!NT_STATUS_IS_OK(status
)) {
1746 access_mask
&= conn
->share_access
;
1749 rejected_share_access
= access_mask
& ~(conn
->share_access
);
1751 if (rejected_share_access
) {
1752 DEBUG(10, ("smbd_calculate_access_mask: Access denied on "
1753 "file %s: rejected by share access mask[0x%08X] "
1754 "orig[0x%08X] mapped[0x%08X] reject[0x%08X]\n",
1755 smb_fname_str_dbg(smb_fname
),
1757 orig_access_mask
, access_mask
,
1758 rejected_share_access
));
1759 return NT_STATUS_ACCESS_DENIED
;
1762 *access_mask_out
= access_mask
;
1763 return NT_STATUS_OK
;
1766 /****************************************************************************
1767 Remove the deferred open entry under lock.
1768 ****************************************************************************/
1770 void remove_deferred_open_entry(struct file_id id
, uint64_t mid
,
1771 struct server_id pid
)
1773 struct share_mode_lock
*lck
= get_existing_share_mode_lock(
1776 DEBUG(0, ("could not get share mode lock\n"));
1779 del_deferred_open_entry(lck
, mid
, pid
);
1783 /****************************************************************************
1784 Return true if this is a state pointer to an asynchronous create.
1785 ****************************************************************************/
1787 bool is_deferred_open_async(const void *ptr
)
1789 const struct deferred_open_record
*state
= (const struct deferred_open_record
*)ptr
;
1791 return state
->async_open
;
1794 static bool clear_ads(uint32_t create_disposition
)
1798 switch (create_disposition
) {
1799 case FILE_SUPERSEDE
:
1800 case FILE_OVERWRITE_IF
:
1801 case FILE_OVERWRITE
:
1810 static int disposition_to_open_flags(uint32_t create_disposition
)
1815 * Currently we're using FILE_SUPERSEDE as the same as
1816 * FILE_OVERWRITE_IF but they really are
1817 * different. FILE_SUPERSEDE deletes an existing file
1818 * (requiring delete access) then recreates it.
1821 switch (create_disposition
) {
1822 case FILE_SUPERSEDE
:
1823 case FILE_OVERWRITE_IF
:
1825 * If file exists replace/overwrite. If file doesn't
1828 ret
= O_CREAT
|O_TRUNC
;
1833 * If file exists open. If file doesn't exist error.
1838 case FILE_OVERWRITE
:
1840 * If file exists overwrite. If file doesn't exist
1848 * If file exists error. If file doesn't exist create.
1850 ret
= O_CREAT
|O_EXCL
;
1855 * If file exists open. If file doesn't exist create.
1863 /****************************************************************************
1864 Open a file with a share mode. Passed in an already created files_struct *.
1865 ****************************************************************************/
1867 static NTSTATUS
open_file_ntcreate(connection_struct
*conn
,
1868 struct smb_request
*req
,
1869 uint32 access_mask
, /* access bits (FILE_READ_DATA etc.) */
1870 uint32 share_access
, /* share constants (FILE_SHARE_READ etc) */
1871 uint32 create_disposition
, /* FILE_OPEN_IF etc. */
1872 uint32 create_options
, /* options such as delete on close. */
1873 uint32 new_dos_attributes
, /* attributes used for new file. */
1874 int oplock_request
, /* internal Samba oplock codes. */
1875 /* Information (FILE_EXISTS etc.) */
1876 uint32_t private_flags
, /* Samba specific flags. */
1880 struct smb_filename
*smb_fname
= fsp
->fsp_name
;
1883 bool file_existed
= VALID_STAT(smb_fname
->st
);
1884 bool def_acl
= False
;
1885 bool posix_open
= False
;
1886 bool new_file_created
= False
;
1887 NTSTATUS fsp_open
= NT_STATUS_ACCESS_DENIED
;
1888 mode_t new_unx_mode
= (mode_t
)0;
1889 mode_t unx_mode
= (mode_t
)0;
1891 uint32 existing_dos_attributes
= 0;
1892 struct timeval request_time
= timeval_zero();
1893 struct share_mode_lock
*lck
= NULL
;
1894 uint32 open_access_mask
= access_mask
;
1897 SMB_STRUCT_STAT saved_stat
= smb_fname
->st
;
1899 if (conn
->printer
) {
1901 * Printers are handled completely differently.
1902 * Most of the passed parameters are ignored.
1906 *pinfo
= FILE_WAS_CREATED
;
1909 DEBUG(10, ("open_file_ntcreate: printer open fname=%s\n",
1910 smb_fname_str_dbg(smb_fname
)));
1913 DEBUG(0,("open_file_ntcreate: printer open without "
1914 "an SMB request!\n"));
1915 return NT_STATUS_INTERNAL_ERROR
;
1918 return print_spool_open(fsp
, smb_fname
->base_name
,
1922 if (!parent_dirname(talloc_tos(), smb_fname
->base_name
, &parent_dir
,
1924 return NT_STATUS_NO_MEMORY
;
1927 if (new_dos_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
1929 unx_mode
= (mode_t
)(new_dos_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
1930 new_dos_attributes
= 0;
1932 /* Windows allows a new file to be created and
1933 silently removes a FILE_ATTRIBUTE_DIRECTORY
1934 sent by the client. Do the same. */
1936 new_dos_attributes
&= ~FILE_ATTRIBUTE_DIRECTORY
;
1938 /* We add FILE_ATTRIBUTE_ARCHIVE to this as this mode is only used if the file is
1940 unx_mode
= unix_mode(conn
, new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
1941 smb_fname
, parent_dir
);
1944 DEBUG(10, ("open_file_ntcreate: fname=%s, dos_attrs=0x%x "
1945 "access_mask=0x%x share_access=0x%x "
1946 "create_disposition = 0x%x create_options=0x%x "
1947 "unix mode=0%o oplock_request=%d private_flags = 0x%x\n",
1948 smb_fname_str_dbg(smb_fname
), new_dos_attributes
,
1949 access_mask
, share_access
, create_disposition
,
1950 create_options
, (unsigned int)unx_mode
, oplock_request
,
1951 (unsigned int)private_flags
));
1953 if ((req
== NULL
) && ((oplock_request
& INTERNAL_OPEN_ONLY
) == 0)) {
1954 DEBUG(0, ("No smb request but not an internal only open!\n"));
1955 return NT_STATUS_INTERNAL_ERROR
;
1959 * Only non-internal opens can be deferred at all
1964 if (get_deferred_open_message_state(req
,
1967 /* Remember the absolute time of the original
1968 request with this mid. We'll use it later to
1969 see if this has timed out. */
1971 /* If it was an async create retry, the file
1974 if (is_deferred_open_async(ptr
)) {
1975 SET_STAT_INVALID(smb_fname
->st
);
1976 file_existed
= false;
1978 struct deferred_open_record
*state
= (struct deferred_open_record
*)ptr
;
1979 /* Remove the deferred open entry under lock. */
1980 remove_deferred_open_entry(
1981 state
->id
, req
->mid
,
1982 messaging_server_id(req
->sconn
->msg_ctx
));
1985 /* Ensure we don't reprocess this message. */
1986 remove_deferred_open_message_smb(req
->sconn
, req
->mid
);
1991 new_dos_attributes
&= SAMBA_ATTRIBUTES_MASK
;
1993 existing_dos_attributes
= dos_mode(conn
, smb_fname
);
1997 /* ignore any oplock requests if oplocks are disabled */
1998 if (!lp_oplocks(SNUM(conn
)) ||
1999 IS_VETO_OPLOCK_PATH(conn
, smb_fname
->base_name
)) {
2000 /* Mask off everything except the private Samba bits. */
2001 oplock_request
&= SAMBA_PRIVATE_OPLOCK_MASK
;
2004 /* this is for OS/2 long file names - say we don't support them */
2005 if (!lp_posix_pathnames() && strstr(smb_fname
->base_name
,".+,;=[].")) {
2006 /* OS/2 Workplace shell fix may be main code stream in a later
2008 DEBUG(5,("open_file_ntcreate: OS/2 long filenames are not "
2010 if (use_nt_status()) {
2011 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2013 return NT_STATUS_DOS(ERRDOS
, ERRcannotopen
);
2016 switch( create_disposition
) {
2018 /* If file exists open. If file doesn't exist error. */
2019 if (!file_existed
) {
2020 DEBUG(5,("open_file_ntcreate: FILE_OPEN "
2021 "requested for file %s and file "
2023 smb_fname_str_dbg(smb_fname
)));
2025 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2029 case FILE_OVERWRITE
:
2030 /* If file exists overwrite. If file doesn't exist
2032 if (!file_existed
) {
2033 DEBUG(5,("open_file_ntcreate: FILE_OVERWRITE "
2034 "requested for file %s and file "
2036 smb_fname_str_dbg(smb_fname
) ));
2038 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2043 /* If file exists error. If file doesn't exist
2046 DEBUG(5,("open_file_ntcreate: FILE_CREATE "
2047 "requested for file %s and file "
2048 "already exists.\n",
2049 smb_fname_str_dbg(smb_fname
)));
2050 if (S_ISDIR(smb_fname
->st
.st_ex_mode
)) {
2055 return map_nt_error_from_unix(errno
);
2059 case FILE_SUPERSEDE
:
2060 case FILE_OVERWRITE_IF
:
2064 return NT_STATUS_INVALID_PARAMETER
;
2067 flags2
= disposition_to_open_flags(create_disposition
);
2069 /* We only care about matching attributes on file exists and
2072 if (!posix_open
&& file_existed
&&
2073 ((create_disposition
== FILE_OVERWRITE
) ||
2074 (create_disposition
== FILE_OVERWRITE_IF
))) {
2075 if (!open_match_attributes(conn
, existing_dos_attributes
,
2077 smb_fname
->st
.st_ex_mode
,
2078 unx_mode
, &new_unx_mode
)) {
2079 DEBUG(5,("open_file_ntcreate: attributes missmatch "
2080 "for file %s (%x %x) (0%o, 0%o)\n",
2081 smb_fname_str_dbg(smb_fname
),
2082 existing_dos_attributes
,
2084 (unsigned int)smb_fname
->st
.st_ex_mode
,
2085 (unsigned int)unx_mode
));
2087 return NT_STATUS_ACCESS_DENIED
;
2091 status
= smbd_calculate_access_mask(conn
, smb_fname
,
2095 if (!NT_STATUS_IS_OK(status
)) {
2096 DEBUG(10, ("open_file_ntcreate: smbd_calculate_access_mask "
2097 "on file %s returned %s\n",
2098 smb_fname_str_dbg(smb_fname
), nt_errstr(status
)));
2102 open_access_mask
= access_mask
;
2104 if ((flags2
& O_TRUNC
) || (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2105 open_access_mask
|= FILE_WRITE_DATA
; /* This will cause oplock breaks. */
2108 DEBUG(10, ("open_file_ntcreate: fname=%s, after mapping "
2109 "access_mask=0x%x\n", smb_fname_str_dbg(smb_fname
),
2113 * Note that we ignore the append flag as append does not
2114 * mean the same thing under DOS and Unix.
2117 if ((access_mask
& (FILE_WRITE_DATA
| FILE_APPEND_DATA
)) ||
2118 (oplock_request
& FORCE_OPLOCK_BREAK_TO_NONE
)) {
2119 /* DENY_DOS opens are always underlying read-write on the
2120 file handle, no matter what the requested access mask
2122 if ((private_flags
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) ||
2123 access_mask
& (FILE_READ_ATTRIBUTES
|FILE_READ_DATA
|FILE_READ_EA
|FILE_EXECUTE
)) {
2133 * Currently we only look at FILE_WRITE_THROUGH for create options.
2137 if ((create_options
& FILE_WRITE_THROUGH
) && lp_strict_sync(SNUM(conn
))) {
2142 if (posix_open
&& (access_mask
& FILE_APPEND_DATA
)) {
2146 if (!posix_open
&& !CAN_WRITE(conn
)) {
2148 * We should really return a permission denied error if either
2149 * O_CREAT or O_TRUNC are set, but for compatibility with
2150 * older versions of Samba we just AND them out.
2152 flags2
&= ~(O_CREAT
|O_TRUNC
);
2156 * Ensure we can't write on a read-only share or file.
2159 if (flags
!= O_RDONLY
&& file_existed
&&
2160 (!CAN_WRITE(conn
) || IS_DOS_READONLY(existing_dos_attributes
))) {
2161 DEBUG(5,("open_file_ntcreate: write access requested for "
2162 "file %s on read only %s\n",
2163 smb_fname_str_dbg(smb_fname
),
2164 !CAN_WRITE(conn
) ? "share" : "file" ));
2166 return NT_STATUS_ACCESS_DENIED
;
2169 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2170 fsp
->share_access
= share_access
;
2171 fsp
->fh
->private_options
= private_flags
;
2172 fsp
->access_mask
= open_access_mask
; /* We change this to the
2173 * requested access_mask after
2174 * the open is done. */
2175 fsp
->posix_open
= posix_open
;
2177 /* Ensure no SAMBA_PRIVATE bits can be set. */
2178 fsp
->oplock_type
= (oplock_request
& ~SAMBA_PRIVATE_OPLOCK_MASK
);
2180 if (timeval_is_zero(&request_time
)) {
2181 request_time
= fsp
->open_time
;
2185 struct share_mode_entry
*batch_entry
= NULL
;
2186 struct share_mode_entry
*exclusive_entry
= NULL
;
2187 bool got_level2_oplock
= false;
2188 bool got_a_none_oplock
= false;
2191 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2192 id
= vfs_file_id_from_sbuf(conn
, &smb_fname
->st
);
2194 lck
= get_share_mode_lock(talloc_tos(), id
,
2196 smb_fname
, &old_write_time
);
2198 DEBUG(0, ("Could not get share mode lock\n"));
2199 return NT_STATUS_SHARING_VIOLATION
;
2202 /* Get the types we need to examine. */
2203 find_oplock_types(fsp
,
2209 &got_a_none_oplock
);
2211 /* First pass - send break only on batch oplocks. */
2212 if ((req
!= NULL
) &&
2213 delay_for_batch_oplocks(fsp
,
2217 schedule_defer_open(lck
, request_time
, req
);
2219 return NT_STATUS_SHARING_VIOLATION
;
2222 /* Use the client requested access mask here, not the one we
2224 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2225 access_mask
, share_access
,
2226 create_options
, &file_existed
);
2228 if (NT_STATUS_IS_OK(status
)) {
2229 /* We might be going to allow this open. Check oplock
2231 /* Second pass - send break for both batch or
2232 * exclusive oplocks. */
2233 if ((req
!= NULL
) &&
2234 delay_for_exclusive_oplocks(
2239 schedule_defer_open(lck
, request_time
, req
);
2241 return NT_STATUS_SHARING_VIOLATION
;
2245 if (NT_STATUS_EQUAL(status
, NT_STATUS_DELETE_PENDING
)) {
2246 /* DELETE_PENDING is not deferred for a second */
2251 grant_fsp_oplock_type(fsp
,
2256 if (!NT_STATUS_IS_OK(status
)) {
2257 uint32 can_access_mask
;
2258 bool can_access
= True
;
2260 SMB_ASSERT(NT_STATUS_EQUAL(status
, NT_STATUS_SHARING_VIOLATION
));
2262 /* Check if this can be done with the deny_dos and fcb
2265 (NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
|
2266 NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
)) {
2268 DEBUG(0, ("DOS open without an SMB "
2271 return NT_STATUS_INTERNAL_ERROR
;
2274 /* Use the client requested access mask here,
2275 * not the one we open with. */
2276 status
= fcb_or_dos_open(req
,
2287 if (NT_STATUS_IS_OK(status
)) {
2290 *pinfo
= FILE_WAS_OPENED
;
2292 return NT_STATUS_OK
;
2297 * This next line is a subtlety we need for
2298 * MS-Access. If a file open will fail due to share
2299 * permissions and also for security (access) reasons,
2300 * we need to return the access failed error, not the
2301 * share error. We can't open the file due to kernel
2302 * oplock deadlock (it's possible we failed above on
2303 * the open_mode_check()) so use a userspace check.
2306 if (flags
& O_RDWR
) {
2307 can_access_mask
= FILE_READ_DATA
|FILE_WRITE_DATA
;
2308 } else if (flags
& O_WRONLY
) {
2309 can_access_mask
= FILE_WRITE_DATA
;
2311 can_access_mask
= FILE_READ_DATA
;
2314 if (((can_access_mask
& FILE_WRITE_DATA
) &&
2315 !CAN_WRITE(conn
)) ||
2316 !NT_STATUS_IS_OK(smbd_check_access_rights(conn
,
2319 can_access_mask
))) {
2324 * If we're returning a share violation, ensure we
2325 * cope with the braindead 1 second delay.
2328 if (!(oplock_request
& INTERNAL_OPEN_ONLY
) &&
2329 lp_defer_sharing_violations()) {
2330 struct timeval timeout
;
2331 struct deferred_open_record state
;
2334 /* this is a hack to speed up torture tests
2336 timeout_usecs
= lp_parm_int(SNUM(conn
),
2337 "smbd","sharedelay",
2338 SHARING_VIOLATION_USEC_WAIT
);
2340 /* This is a relative time, added to the absolute
2341 request_time value to get the absolute timeout time.
2342 Note that if this is the second or greater time we enter
2343 this codepath for this particular request mid then
2344 request_time is left as the absolute time of the *first*
2345 time this request mid was processed. This is what allows
2346 the request to eventually time out. */
2348 timeout
= timeval_set(0, timeout_usecs
);
2350 /* Nothing actually uses state.delayed_for_oplocks
2351 but it's handy to differentiate in debug messages
2352 between a 30 second delay due to oplock break, and
2353 a 1 second delay for share mode conflicts. */
2355 state
.delayed_for_oplocks
= False
;
2356 state
.async_open
= false;
2360 && !request_timed_out(request_time
,
2362 defer_open(lck
, request_time
, timeout
,
2370 * We have detected a sharing violation here
2371 * so return the correct error code
2373 status
= NT_STATUS_SHARING_VIOLATION
;
2375 status
= NT_STATUS_ACCESS_DENIED
;
2381 * We exit this block with the share entry *locked*.....
2385 SMB_ASSERT(!file_existed
|| (lck
!= NULL
));
2388 * Ensure we pay attention to default ACLs on directories if required.
2391 if ((flags2
& O_CREAT
) && lp_inherit_acls(SNUM(conn
)) &&
2392 (def_acl
= directory_has_default_acl(conn
, parent_dir
))) {
2393 unx_mode
= (0777 & lp_create_mask(SNUM(conn
)));
2396 DEBUG(4,("calling open_file with flags=0x%X flags2=0x%X mode=0%o, "
2397 "access_mask = 0x%x, open_access_mask = 0x%x\n",
2398 (unsigned int)flags
, (unsigned int)flags2
,
2399 (unsigned int)unx_mode
, (unsigned int)access_mask
,
2400 (unsigned int)open_access_mask
));
2402 fsp_open
= open_file(fsp
, conn
, req
, parent_dir
,
2403 flags
|flags2
, unx_mode
, access_mask
,
2404 open_access_mask
, &new_file_created
);
2406 if (!NT_STATUS_IS_OK(fsp_open
)) {
2407 if (NT_STATUS_EQUAL(fsp_open
, NT_STATUS_RETRY
)) {
2408 schedule_async_open(request_time
, req
);
2414 if (file_existed
&& !check_same_dev_ino(&saved_stat
, &smb_fname
->st
)) {
2416 * The file did exist, but some other (local or NFS)
2417 * process either renamed/unlinked and re-created the
2418 * file with different dev/ino after we walked the path,
2419 * but before we did the open. We could retry the
2420 * open but it's a rare enough case it's easier to
2421 * just fail the open to prevent creating any problems
2422 * in the open file db having the wrong dev/ino key.
2426 DEBUG(1,("open_file_ntcreate: file %s - dev/ino mismatch. "
2427 "Old (dev=0x%llu, ino =0x%llu). "
2428 "New (dev=0x%llu, ino=0x%llu). Failing open "
2429 " with NT_STATUS_ACCESS_DENIED.\n",
2430 smb_fname_str_dbg(smb_fname
),
2431 (unsigned long long)saved_stat
.st_ex_dev
,
2432 (unsigned long long)saved_stat
.st_ex_ino
,
2433 (unsigned long long)smb_fname
->st
.st_ex_dev
,
2434 (unsigned long long)smb_fname
->st
.st_ex_ino
));
2435 return NT_STATUS_ACCESS_DENIED
;
2438 if (!file_existed
) {
2439 struct share_mode_entry
*batch_entry
= NULL
;
2440 struct share_mode_entry
*exclusive_entry
= NULL
;
2441 bool got_level2_oplock
= false;
2442 bool got_a_none_oplock
= false;
2443 struct timespec old_write_time
= smb_fname
->st
.st_ex_mtime
;
2446 * Deal with the race condition where two smbd's detect the
2447 * file doesn't exist and do the create at the same time. One
2448 * of them will win and set a share mode, the other (ie. this
2449 * one) should check if the requested share mode for this
2450 * create is allowed.
2454 * Now the file exists and fsp is successfully opened,
2455 * fsp->dev and fsp->inode are valid and should replace the
2456 * dev=0,inode=0 from a non existent file. Spotted by
2457 * Nadav Danieli <nadavd@exanet.com>. JRA.
2462 lck
= get_share_mode_lock(talloc_tos(), id
,
2464 smb_fname
, &old_write_time
);
2467 DEBUG(0, ("open_file_ntcreate: Could not get share "
2468 "mode lock for %s\n",
2469 smb_fname_str_dbg(smb_fname
)));
2471 return NT_STATUS_SHARING_VIOLATION
;
2474 /* Get the types we need to examine. */
2475 find_oplock_types(fsp
,
2481 &got_a_none_oplock
);
2483 /* First pass - send break only on batch oplocks. */
2484 if ((req
!= NULL
) &&
2485 delay_for_batch_oplocks(fsp
,
2489 schedule_defer_open(lck
, request_time
, req
);
2492 return NT_STATUS_SHARING_VIOLATION
;
2495 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
2496 access_mask
, share_access
,
2497 create_options
, &file_existed
);
2499 if (NT_STATUS_IS_OK(status
)) {
2500 /* We might be going to allow this open. Check oplock
2502 /* Second pass - send break for both batch or
2503 * exclusive oplocks. */
2504 if ((req
!= NULL
) &&
2505 delay_for_exclusive_oplocks(
2510 schedule_defer_open(lck
, request_time
, req
);
2513 return NT_STATUS_SHARING_VIOLATION
;
2517 if (!NT_STATUS_IS_OK(status
)) {
2518 struct deferred_open_record state
;
2520 state
.delayed_for_oplocks
= False
;
2521 state
.async_open
= false;
2524 /* Do it all over again immediately. In the second
2525 * round we will find that the file existed and handle
2526 * the DELETE_PENDING and FCB cases correctly. No need
2527 * to duplicate the code here. Essentially this is a
2528 * "goto top of this function", but don't tell
2532 defer_open(lck
, request_time
, timeval_zero(),
2540 grant_fsp_oplock_type(fsp
,
2546 * We exit this block with the share entry *locked*.....
2551 SMB_ASSERT(lck
!= NULL
);
2553 /* Delete streams if create_disposition requires it */
2554 if (!new_file_created
&& clear_ads(create_disposition
) &&
2555 !is_ntfs_stream_smb_fname(smb_fname
)) {
2556 status
= delete_all_streams(conn
, smb_fname
->base_name
);
2557 if (!NT_STATUS_IS_OK(status
)) {
2564 /* note that we ignore failure for the following. It is
2565 basically a hack for NFS, and NFS will never set one of
2566 these only read them. Nobody but Samba can ever set a deny
2567 mode and we have already checked our more authoritative
2568 locking database for permission to set this deny mode. If
2569 the kernel refuses the operations then the kernel is wrong.
2570 note that GPFS supports it as well - jmcd */
2572 if (fsp
->fh
->fd
!= -1 && lp_kernel_share_modes(SNUM(conn
))) {
2574 ret_flock
= SMB_VFS_KERNEL_FLOCK(fsp
, share_access
, access_mask
);
2575 if(ret_flock
== -1 ){
2580 return NT_STATUS_SHARING_VIOLATION
;
2585 * At this point onwards, we can guarentee that the share entry
2586 * is locked, whether we created the file or not, and that the
2587 * deny mode is compatible with all current opens.
2591 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
2592 * but we don't have to store this - just ignore it on access check.
2594 if (conn
->sconn
->using_smb2
) {
2596 * SMB2 doesn't return it (according to Microsoft tests).
2597 * Test Case: TestSuite_ScenarioNo009GrantedAccessTestS0
2598 * File created with access = 0x7 (Read, Write, Delete)
2599 * Query Info on file returns 0x87 (Read, Write, Delete, Read Attributes)
2601 fsp
->access_mask
= access_mask
;
2603 /* But SMB1 does. */
2604 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
2608 /* stat opens on existing files don't get oplocks. */
2609 if (is_stat_open(open_access_mask
)) {
2610 fsp
->oplock_type
= NO_OPLOCK
;
2614 if (new_file_created
) {
2615 info
= FILE_WAS_CREATED
;
2617 if (flags2
& O_TRUNC
) {
2618 info
= FILE_WAS_OVERWRITTEN
;
2620 info
= FILE_WAS_OPENED
;
2629 * Setup the oplock info in both the shared memory and
2633 status
= set_file_oplock(fsp
, fsp
->oplock_type
);
2634 if (!NT_STATUS_IS_OK(status
)) {
2636 * Could not get the kernel oplock or there are byte-range
2637 * locks on the file.
2639 fsp
->oplock_type
= NO_OPLOCK
;
2642 set_share_mode(lck
, fsp
, get_current_uid(conn
),
2646 /* Handle strange delete on close create semantics. */
2647 if (create_options
& FILE_DELETE_ON_CLOSE
) {
2649 status
= can_set_delete_on_close(fsp
, new_dos_attributes
);
2651 if (!NT_STATUS_IS_OK(status
)) {
2652 /* Remember to delete the mode we just added. */
2653 del_share_mode(lck
, fsp
);
2658 /* Note that here we set the *inital* delete on close flag,
2659 not the regular one. The magic gets handled in close. */
2660 fsp
->initial_delete_on_close
= True
;
2663 if (info
!= FILE_WAS_OPENED
) {
2664 /* Files should be initially set as archive */
2665 if (lp_map_archive(SNUM(conn
)) ||
2666 lp_store_dos_attributes(SNUM(conn
))) {
2668 if (file_set_dosmode(conn
, smb_fname
,
2669 new_dos_attributes
| FILE_ATTRIBUTE_ARCHIVE
,
2670 parent_dir
, true) == 0) {
2671 unx_mode
= smb_fname
->st
.st_ex_mode
;
2677 /* Determine sparse flag. */
2679 /* POSIX opens are sparse by default. */
2680 fsp
->is_sparse
= true;
2682 fsp
->is_sparse
= (file_existed
&&
2683 (existing_dos_attributes
& FILE_ATTRIBUTE_SPARSE
));
2687 * Take care of inherited ACLs on created files - if default ACL not
2691 if (!posix_open
&& new_file_created
&& !def_acl
) {
2693 int saved_errno
= errno
; /* We might get ENOSYS in the next
2696 if (SMB_VFS_FCHMOD_ACL(fsp
, unx_mode
) == -1 &&
2698 errno
= saved_errno
; /* Ignore ENOSYS */
2701 } else if (new_unx_mode
) {
2705 /* Attributes need changing. File already existed. */
2708 int saved_errno
= errno
; /* We might get ENOSYS in the
2710 ret
= SMB_VFS_FCHMOD_ACL(fsp
, new_unx_mode
);
2712 if (ret
== -1 && errno
== ENOSYS
) {
2713 errno
= saved_errno
; /* Ignore ENOSYS */
2715 DEBUG(5, ("open_file_ntcreate: reset "
2716 "attributes of file %s to 0%o\n",
2717 smb_fname_str_dbg(smb_fname
),
2718 (unsigned int)new_unx_mode
));
2719 ret
= 0; /* Don't do the fchmod below. */
2724 (SMB_VFS_FCHMOD(fsp
, new_unx_mode
) == -1))
2725 DEBUG(5, ("open_file_ntcreate: failed to reset "
2726 "attributes of file %s to 0%o\n",
2727 smb_fname_str_dbg(smb_fname
),
2728 (unsigned int)new_unx_mode
));
2731 /* If this is a successful open, we must remove any deferred open
2734 del_deferred_open_entry(lck
, req
->mid
,
2735 messaging_server_id(req
->sconn
->msg_ctx
));
2739 return NT_STATUS_OK
;
2743 /****************************************************************************
2744 Open a file for for write to ensure that we can fchmod it.
2745 ****************************************************************************/
2747 NTSTATUS
open_file_fchmod(connection_struct
*conn
,
2748 struct smb_filename
*smb_fname
,
2749 files_struct
**result
)
2751 if (!VALID_STAT(smb_fname
->st
)) {
2752 return NT_STATUS_INVALID_PARAMETER
;
2755 return SMB_VFS_CREATE_FILE(
2758 0, /* root_dir_fid */
2759 smb_fname
, /* fname */
2760 FILE_WRITE_DATA
, /* access_mask */
2761 (FILE_SHARE_READ
| FILE_SHARE_WRITE
| /* share_access */
2763 FILE_OPEN
, /* create_disposition*/
2764 0, /* create_options */
2765 0, /* file_attributes */
2766 INTERNAL_OPEN_ONLY
, /* oplock_request */
2767 0, /* allocation_size */
2768 0, /* private_flags */
2771 result
, /* result */
2775 static NTSTATUS
mkdir_internal(connection_struct
*conn
,
2776 struct smb_filename
*smb_dname
,
2777 uint32 file_attributes
)
2780 char *parent_dir
= NULL
;
2782 bool posix_open
= false;
2783 bool need_re_stat
= false;
2784 uint32_t access_mask
= SEC_DIR_ADD_SUBDIR
;
2786 if(access_mask
& ~(conn
->share_access
)) {
2787 DEBUG(5,("mkdir_internal: failing share access "
2788 "%s\n", lp_servicename(talloc_tos(), SNUM(conn
))));
2789 return NT_STATUS_ACCESS_DENIED
;
2792 if (!parent_dirname(talloc_tos(), smb_dname
->base_name
, &parent_dir
,
2794 return NT_STATUS_NO_MEMORY
;
2797 if (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) {
2799 mode
= (mode_t
)(file_attributes
& ~FILE_FLAG_POSIX_SEMANTICS
);
2801 mode
= unix_mode(conn
, FILE_ATTRIBUTE_DIRECTORY
, smb_dname
, parent_dir
);
2804 status
= check_parent_access(conn
,
2807 if(!NT_STATUS_IS_OK(status
)) {
2808 DEBUG(5,("mkdir_internal: check_parent_access "
2809 "on directory %s for path %s returned %s\n",
2811 smb_dname
->base_name
,
2812 nt_errstr(status
) ));
2816 if (SMB_VFS_MKDIR(conn
, smb_dname
->base_name
, mode
) != 0) {
2817 return map_nt_error_from_unix(errno
);
2820 /* Ensure we're checking for a symlink here.... */
2821 /* We don't want to get caught by a symlink racer. */
2823 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2824 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2825 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2826 return map_nt_error_from_unix(errno
);
2829 if (!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
2830 DEBUG(0, ("Directory '%s' just created is not a directory !\n",
2831 smb_fname_str_dbg(smb_dname
)));
2832 return NT_STATUS_NOT_A_DIRECTORY
;
2835 if (lp_store_dos_attributes(SNUM(conn
))) {
2837 file_set_dosmode(conn
, smb_dname
,
2838 file_attributes
| FILE_ATTRIBUTE_DIRECTORY
,
2843 if (lp_inherit_perms(SNUM(conn
))) {
2844 inherit_access_posix_acl(conn
, parent_dir
,
2845 smb_dname
->base_name
, mode
);
2846 need_re_stat
= true;
2851 * Check if high bits should have been set,
2852 * then (if bits are missing): add them.
2853 * Consider bits automagically set by UNIX, i.e. SGID bit from parent
2856 if ((mode
& ~(S_IRWXU
|S_IRWXG
|S_IRWXO
)) &&
2857 (mode
& ~smb_dname
->st
.st_ex_mode
)) {
2858 SMB_VFS_CHMOD(conn
, smb_dname
->base_name
,
2859 (smb_dname
->st
.st_ex_mode
|
2860 (mode
& ~smb_dname
->st
.st_ex_mode
)));
2861 need_re_stat
= true;
2865 /* Change the owner if required. */
2866 if (lp_inherit_owner(SNUM(conn
))) {
2867 change_dir_owner_to_parent(conn
, parent_dir
,
2868 smb_dname
->base_name
,
2870 need_re_stat
= true;
2874 if (SMB_VFS_LSTAT(conn
, smb_dname
) == -1) {
2875 DEBUG(2, ("Could not stat directory '%s' just created: %s\n",
2876 smb_fname_str_dbg(smb_dname
), strerror(errno
)));
2877 return map_nt_error_from_unix(errno
);
2881 notify_fname(conn
, NOTIFY_ACTION_ADDED
, FILE_NOTIFY_CHANGE_DIR_NAME
,
2882 smb_dname
->base_name
);
2884 return NT_STATUS_OK
;
2887 /****************************************************************************
2888 Open a directory from an NT SMB call.
2889 ****************************************************************************/
2891 static NTSTATUS
open_directory(connection_struct
*conn
,
2892 struct smb_request
*req
,
2893 struct smb_filename
*smb_dname
,
2895 uint32 share_access
,
2896 uint32 create_disposition
,
2897 uint32 create_options
,
2898 uint32 file_attributes
,
2900 files_struct
**result
)
2902 files_struct
*fsp
= NULL
;
2903 bool dir_existed
= VALID_STAT(smb_dname
->st
) ? True
: False
;
2904 struct share_mode_lock
*lck
= NULL
;
2906 struct timespec mtimespec
;
2909 if (is_ntfs_stream_smb_fname(smb_dname
)) {
2910 DEBUG(2, ("open_directory: %s is a stream name!\n",
2911 smb_fname_str_dbg(smb_dname
)));
2912 return NT_STATUS_NOT_A_DIRECTORY
;
2915 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
)) {
2916 /* Ensure we have a directory attribute. */
2917 file_attributes
|= FILE_ATTRIBUTE_DIRECTORY
;
2920 DEBUG(5,("open_directory: opening directory %s, access_mask = 0x%x, "
2921 "share_access = 0x%x create_options = 0x%x, "
2922 "create_disposition = 0x%x, file_attributes = 0x%x\n",
2923 smb_fname_str_dbg(smb_dname
),
2924 (unsigned int)access_mask
,
2925 (unsigned int)share_access
,
2926 (unsigned int)create_options
,
2927 (unsigned int)create_disposition
,
2928 (unsigned int)file_attributes
));
2930 status
= smbd_calculate_access_mask(conn
, smb_dname
, false,
2931 access_mask
, &access_mask
);
2932 if (!NT_STATUS_IS_OK(status
)) {
2933 DEBUG(10, ("open_directory: smbd_calculate_access_mask "
2934 "on file %s returned %s\n",
2935 smb_fname_str_dbg(smb_dname
),
2936 nt_errstr(status
)));
2940 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
2941 !security_token_has_privilege(get_current_nttok(conn
),
2942 SEC_PRIV_SECURITY
)) {
2943 DEBUG(10, ("open_directory: open on %s "
2944 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
2945 smb_fname_str_dbg(smb_dname
)));
2946 return NT_STATUS_PRIVILEGE_NOT_HELD
;
2949 switch( create_disposition
) {
2953 return NT_STATUS_OBJECT_NAME_NOT_FOUND
;
2956 info
= FILE_WAS_OPENED
;
2961 /* If directory exists error. If directory doesn't
2965 status
= NT_STATUS_OBJECT_NAME_COLLISION
;
2966 DEBUG(2, ("open_directory: unable to create "
2967 "%s. Error was %s\n",
2968 smb_fname_str_dbg(smb_dname
),
2969 nt_errstr(status
)));
2973 status
= mkdir_internal(conn
, smb_dname
,
2976 if (!NT_STATUS_IS_OK(status
)) {
2977 DEBUG(2, ("open_directory: unable to create "
2978 "%s. Error was %s\n",
2979 smb_fname_str_dbg(smb_dname
),
2980 nt_errstr(status
)));
2984 info
= FILE_WAS_CREATED
;
2989 * If directory exists open. If directory doesn't
2994 status
= NT_STATUS_OK
;
2995 info
= FILE_WAS_OPENED
;
2997 status
= mkdir_internal(conn
, smb_dname
,
3000 if (NT_STATUS_IS_OK(status
)) {
3001 info
= FILE_WAS_CREATED
;
3003 /* Cope with create race. */
3004 if (!NT_STATUS_EQUAL(status
,
3005 NT_STATUS_OBJECT_NAME_COLLISION
)) {
3006 DEBUG(2, ("open_directory: unable to create "
3007 "%s. Error was %s\n",
3008 smb_fname_str_dbg(smb_dname
),
3009 nt_errstr(status
)));
3012 info
= FILE_WAS_OPENED
;
3018 case FILE_SUPERSEDE
:
3019 case FILE_OVERWRITE
:
3020 case FILE_OVERWRITE_IF
:
3022 DEBUG(5,("open_directory: invalid create_disposition "
3023 "0x%x for directory %s\n",
3024 (unsigned int)create_disposition
,
3025 smb_fname_str_dbg(smb_dname
)));
3026 return NT_STATUS_INVALID_PARAMETER
;
3029 if(!S_ISDIR(smb_dname
->st
.st_ex_mode
)) {
3030 DEBUG(5,("open_directory: %s is not a directory !\n",
3031 smb_fname_str_dbg(smb_dname
)));
3032 return NT_STATUS_NOT_A_DIRECTORY
;
3035 if (info
== FILE_WAS_OPENED
) {
3036 status
= smbd_check_access_rights(conn
,
3040 if (!NT_STATUS_IS_OK(status
)) {
3041 DEBUG(10, ("open_directory: smbd_check_access_rights on "
3042 "file %s failed with %s\n",
3043 smb_fname_str_dbg(smb_dname
),
3044 nt_errstr(status
)));
3049 status
= file_new(req
, conn
, &fsp
);
3050 if(!NT_STATUS_IS_OK(status
)) {
3055 * Setup the files_struct for it.
3058 fsp
->file_id
= vfs_file_id_from_sbuf(conn
, &smb_dname
->st
);
3059 fsp
->vuid
= req
? req
->vuid
: UID_FIELD_INVALID
;
3060 fsp
->file_pid
= req
? req
->smbpid
: 0;
3061 fsp
->can_lock
= False
;
3062 fsp
->can_read
= False
;
3063 fsp
->can_write
= False
;
3065 fsp
->share_access
= share_access
;
3066 fsp
->fh
->private_options
= 0;
3068 * According to Samba4, SEC_FILE_READ_ATTRIBUTE is always granted,
3070 fsp
->access_mask
= access_mask
| FILE_READ_ATTRIBUTES
;
3071 fsp
->print_file
= NULL
;
3072 fsp
->modified
= False
;
3073 fsp
->oplock_type
= NO_OPLOCK
;
3074 fsp
->sent_oplock_break
= NO_BREAK_SENT
;
3075 fsp
->is_directory
= True
;
3076 fsp
->posix_open
= (file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) ? True
: False
;
3077 status
= fsp_set_smb_fname(fsp
, smb_dname
);
3078 if (!NT_STATUS_IS_OK(status
)) {
3079 file_free(req
, fsp
);
3083 mtimespec
= smb_dname
->st
.st_ex_mtime
;
3086 status
= fd_open(conn
, fsp
, O_RDONLY
|O_DIRECTORY
, 0);
3088 /* POSIX allows us to open a directory with O_RDONLY. */
3089 status
= fd_open(conn
, fsp
, O_RDONLY
, 0);
3091 if (!NT_STATUS_IS_OK(status
)) {
3092 DEBUG(5, ("open_directory: Could not open fd for "
3094 smb_fname_str_dbg(smb_dname
),
3095 nt_errstr(status
)));
3096 file_free(req
, fsp
);
3100 status
= vfs_stat_fsp(fsp
);
3101 if (!NT_STATUS_IS_OK(status
)) {
3103 file_free(req
, fsp
);
3107 /* Ensure there was no race condition. */
3108 if (!check_same_stat(&smb_dname
->st
, &fsp
->fsp_name
->st
)) {
3109 DEBUG(5,("open_directory: stat struct differs for "
3111 smb_fname_str_dbg(smb_dname
)));
3113 file_free(req
, fsp
);
3114 return NT_STATUS_ACCESS_DENIED
;
3117 lck
= get_share_mode_lock(talloc_tos(), fsp
->file_id
,
3118 conn
->connectpath
, smb_dname
,
3122 DEBUG(0, ("open_directory: Could not get share mode lock for "
3123 "%s\n", smb_fname_str_dbg(smb_dname
)));
3125 file_free(req
, fsp
);
3126 return NT_STATUS_SHARING_VIOLATION
;
3129 status
= open_mode_check(conn
, lck
, fsp
->name_hash
,
3130 access_mask
, share_access
,
3131 create_options
, &dir_existed
);
3133 if (!NT_STATUS_IS_OK(status
)) {
3136 file_free(req
, fsp
);
3140 set_share_mode(lck
, fsp
, get_current_uid(conn
),
3141 req
? req
->mid
: 0, NO_OPLOCK
);
3143 /* For directories the delete on close bit at open time seems
3144 always to be honored on close... See test 19 in Samba4 BASE-DELETE. */
3145 if (create_options
& FILE_DELETE_ON_CLOSE
) {
3146 status
= can_set_delete_on_close(fsp
, 0);
3147 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
, NT_STATUS_DIRECTORY_NOT_EMPTY
)) {
3150 file_free(req
, fsp
);
3154 if (NT_STATUS_IS_OK(status
)) {
3155 /* Note that here we set the *inital* delete on close flag,
3156 not the regular one. The magic gets handled in close. */
3157 fsp
->initial_delete_on_close
= True
;
3168 return NT_STATUS_OK
;
3171 NTSTATUS
create_directory(connection_struct
*conn
, struct smb_request
*req
,
3172 struct smb_filename
*smb_dname
)
3177 status
= SMB_VFS_CREATE_FILE(
3180 0, /* root_dir_fid */
3181 smb_dname
, /* fname */
3182 FILE_READ_ATTRIBUTES
, /* access_mask */
3183 FILE_SHARE_NONE
, /* share_access */
3184 FILE_CREATE
, /* create_disposition*/
3185 FILE_DIRECTORY_FILE
, /* create_options */
3186 FILE_ATTRIBUTE_DIRECTORY
, /* file_attributes */
3187 0, /* oplock_request */
3188 0, /* allocation_size */
3189 0, /* private_flags */
3195 if (NT_STATUS_IS_OK(status
)) {
3196 close_file(req
, fsp
, NORMAL_CLOSE
);
3202 /****************************************************************************
3203 Receive notification that one of our open files has been renamed by another
3205 ****************************************************************************/
3207 void msg_file_was_renamed(struct messaging_context
*msg
,
3210 struct server_id server_id
,
3214 char *frm
= (char *)data
->data
;
3216 const char *sharepath
;
3217 const char *base_name
;
3218 const char *stream_name
;
3219 struct smb_filename
*smb_fname
= NULL
;
3220 size_t sp_len
, bn_len
;
3222 struct smbd_server_connection
*sconn
=
3223 talloc_get_type_abort(private_data
,
3224 struct smbd_server_connection
);
3226 if (data
->data
== NULL
3227 || data
->length
< MSG_FILE_RENAMED_MIN_SIZE
+ 2) {
3228 DEBUG(0, ("msg_file_was_renamed: Got invalid msg len %d\n",
3229 (int)data
->length
));
3233 /* Unpack the message. */
3234 pull_file_id_24(frm
, &id
);
3235 sharepath
= &frm
[24];
3236 sp_len
= strlen(sharepath
);
3237 base_name
= sharepath
+ sp_len
+ 1;
3238 bn_len
= strlen(base_name
);
3239 stream_name
= sharepath
+ sp_len
+ 1 + bn_len
+ 1;
3241 /* stream_name must always be NULL if there is no stream. */
3242 if (stream_name
[0] == '\0') {
3246 status
= create_synthetic_smb_fname(talloc_tos(), base_name
,
3247 stream_name
, NULL
, &smb_fname
);
3248 if (!NT_STATUS_IS_OK(status
)) {
3252 DEBUG(10,("msg_file_was_renamed: Got rename message for sharepath %s, new name %s, "
3254 sharepath
, smb_fname_str_dbg(smb_fname
),
3255 file_id_string_tos(&id
)));
3257 for(fsp
= file_find_di_first(sconn
, id
); fsp
;
3258 fsp
= file_find_di_next(fsp
)) {
3259 if (memcmp(fsp
->conn
->connectpath
, sharepath
, sp_len
) == 0) {
3261 DEBUG(10,("msg_file_was_renamed: renaming file %s from %s -> %s\n",
3262 fsp_fnum_dbg(fsp
), fsp_str_dbg(fsp
),
3263 smb_fname_str_dbg(smb_fname
)));
3264 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3265 if (!NT_STATUS_IS_OK(status
)) {
3270 /* Now we have the complete path we can work out if this is
3271 actually within this share and adjust newname accordingly. */
3272 DEBUG(10,("msg_file_was_renamed: share mismatch (sharepath %s "
3273 "not sharepath %s) "
3274 "%s from %s -> %s\n",
3275 fsp
->conn
->connectpath
,
3279 smb_fname_str_dbg(smb_fname
)));
3283 TALLOC_FREE(smb_fname
);
3288 * If a main file is opened for delete, all streams need to be checked for
3289 * !FILE_SHARE_DELETE. Do this by opening with DELETE_ACCESS.
3290 * If that works, delete them all by setting the delete on close and close.
3293 NTSTATUS
open_streams_for_delete(connection_struct
*conn
,
3296 struct stream_struct
*stream_info
= NULL
;
3297 files_struct
**streams
= NULL
;
3299 unsigned int num_streams
= 0;
3300 TALLOC_CTX
*frame
= talloc_stackframe();
3303 status
= vfs_streaminfo(conn
, NULL
, fname
, talloc_tos(),
3304 &num_streams
, &stream_info
);
3306 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_IMPLEMENTED
)
3307 || NT_STATUS_EQUAL(status
, NT_STATUS_OBJECT_NAME_NOT_FOUND
)) {
3308 DEBUG(10, ("no streams around\n"));
3310 return NT_STATUS_OK
;
3313 if (!NT_STATUS_IS_OK(status
)) {
3314 DEBUG(10, ("vfs_streaminfo failed: %s\n",
3315 nt_errstr(status
)));
3319 DEBUG(10, ("open_streams_for_delete found %d streams\n",
3322 if (num_streams
== 0) {
3324 return NT_STATUS_OK
;
3327 streams
= talloc_array(talloc_tos(), files_struct
*, num_streams
);
3328 if (streams
== NULL
) {
3329 DEBUG(0, ("talloc failed\n"));
3330 status
= NT_STATUS_NO_MEMORY
;
3334 for (i
=0; i
<num_streams
; i
++) {
3335 struct smb_filename
*smb_fname
= NULL
;
3337 if (strequal(stream_info
[i
].name
, "::$DATA")) {
3342 status
= create_synthetic_smb_fname(talloc_tos(), fname
,
3343 stream_info
[i
].name
,
3345 if (!NT_STATUS_IS_OK(status
)) {
3349 if (SMB_VFS_STAT(conn
, smb_fname
) == -1) {
3350 DEBUG(10, ("Unable to stat stream: %s\n",
3351 smb_fname_str_dbg(smb_fname
)));
3354 status
= SMB_VFS_CREATE_FILE(
3357 0, /* root_dir_fid */
3358 smb_fname
, /* fname */
3359 DELETE_ACCESS
, /* access_mask */
3360 (FILE_SHARE_READ
| /* share_access */
3361 FILE_SHARE_WRITE
| FILE_SHARE_DELETE
),
3362 FILE_OPEN
, /* create_disposition*/
3363 0, /* create_options */
3364 FILE_ATTRIBUTE_NORMAL
, /* file_attributes */
3365 0, /* oplock_request */
3366 0, /* allocation_size */
3367 NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
, /* private_flags */
3370 &streams
[i
], /* result */
3373 if (!NT_STATUS_IS_OK(status
)) {
3374 DEBUG(10, ("Could not open stream %s: %s\n",
3375 smb_fname_str_dbg(smb_fname
),
3376 nt_errstr(status
)));
3378 TALLOC_FREE(smb_fname
);
3381 TALLOC_FREE(smb_fname
);
3385 * don't touch the variable "status" beyond this point :-)
3388 for (i
-= 1 ; i
>= 0; i
--) {
3389 if (streams
[i
] == NULL
) {
3393 DEBUG(10, ("Closing stream # %d, %s\n", i
,
3394 fsp_str_dbg(streams
[i
])));
3395 close_file(NULL
, streams
[i
], NORMAL_CLOSE
);
3403 /*********************************************************************
3404 Create a default ACL by inheriting from the parent. If no inheritance
3405 from the parent available, don't set anything. This will leave the actual
3406 permissions the new file or directory already got from the filesystem
3407 as the NT ACL when read.
3408 *********************************************************************/
3410 static NTSTATUS
inherit_new_acl(files_struct
*fsp
)
3412 TALLOC_CTX
*ctx
= talloc_tos();
3413 char *parent_name
= NULL
;
3414 struct security_descriptor
*parent_desc
= NULL
;
3415 NTSTATUS status
= NT_STATUS_OK
;
3416 struct security_descriptor
*psd
= NULL
;
3417 struct dom_sid
*owner_sid
= NULL
;
3418 struct dom_sid
*group_sid
= NULL
;
3419 uint32_t security_info_sent
= (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
);
3420 bool inherit_owner
= lp_inherit_owner(SNUM(fsp
->conn
));
3421 bool inheritable_components
= false;
3424 if (!parent_dirname(ctx
, fsp
->fsp_name
->base_name
, &parent_name
, NULL
)) {
3425 return NT_STATUS_NO_MEMORY
;
3428 status
= SMB_VFS_GET_NT_ACL(fsp
->conn
,
3430 (SECINFO_OWNER
| SECINFO_GROUP
| SECINFO_DACL
),
3432 if (!NT_STATUS_IS_OK(status
)) {
3436 inheritable_components
= sd_has_inheritable_components(parent_desc
,
3439 if (!inheritable_components
&& !inherit_owner
) {
3440 /* Nothing to inherit and not setting owner. */
3441 return NT_STATUS_OK
;
3444 /* Create an inherited descriptor from the parent. */
3446 if (DEBUGLEVEL
>= 10) {
3447 DEBUG(10,("inherit_new_acl: parent acl for %s is:\n",
3448 fsp_str_dbg(fsp
) ));
3449 NDR_PRINT_DEBUG(security_descriptor
, parent_desc
);
3452 /* Inherit from parent descriptor if "inherit owner" set. */
3453 if (inherit_owner
) {
3454 owner_sid
= parent_desc
->owner_sid
;
3455 group_sid
= parent_desc
->group_sid
;
3458 if (owner_sid
== NULL
) {
3459 owner_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_USER_SID_INDEX
];
3461 if (group_sid
== NULL
) {
3462 group_sid
= &fsp
->conn
->session_info
->security_token
->sids
[PRIMARY_GROUP_SID_INDEX
];
3465 status
= se_create_child_secdesc(ctx
,
3472 if (!NT_STATUS_IS_OK(status
)) {
3476 /* If inheritable_components == false,
3477 se_create_child_secdesc()
3478 creates a security desriptor with a NULL dacl
3479 entry, but with SEC_DESC_DACL_PRESENT. We need
3480 to remove that flag. */
3482 if (!inheritable_components
) {
3483 security_info_sent
&= ~SECINFO_DACL
;
3484 psd
->type
&= ~SEC_DESC_DACL_PRESENT
;
3487 if (DEBUGLEVEL
>= 10) {
3488 DEBUG(10,("inherit_new_acl: child acl for %s is:\n",
3489 fsp_str_dbg(fsp
) ));
3490 NDR_PRINT_DEBUG(security_descriptor
, psd
);
3493 if (inherit_owner
) {
3494 /* We need to be root to force this. */
3497 status
= SMB_VFS_FSET_NT_ACL(fsp
,
3500 if (inherit_owner
) {
3507 * Wrapper around open_file_ntcreate and open_directory
3510 static NTSTATUS
create_file_unixpath(connection_struct
*conn
,
3511 struct smb_request
*req
,
3512 struct smb_filename
*smb_fname
,
3513 uint32_t access_mask
,
3514 uint32_t share_access
,
3515 uint32_t create_disposition
,
3516 uint32_t create_options
,
3517 uint32_t file_attributes
,
3518 uint32_t oplock_request
,
3519 uint64_t allocation_size
,
3520 uint32_t private_flags
,
3521 struct security_descriptor
*sd
,
3522 struct ea_list
*ea_list
,
3524 files_struct
**result
,
3527 int info
= FILE_WAS_OPENED
;
3528 files_struct
*base_fsp
= NULL
;
3529 files_struct
*fsp
= NULL
;
3532 DEBUG(10,("create_file_unixpath: access_mask = 0x%x "
3533 "file_attributes = 0x%x, share_access = 0x%x, "
3534 "create_disposition = 0x%x create_options = 0x%x "
3535 "oplock_request = 0x%x private_flags = 0x%x "
3536 "ea_list = 0x%p, sd = 0x%p, "
3538 (unsigned int)access_mask
,
3539 (unsigned int)file_attributes
,
3540 (unsigned int)share_access
,
3541 (unsigned int)create_disposition
,
3542 (unsigned int)create_options
,
3543 (unsigned int)oplock_request
,
3544 (unsigned int)private_flags
,
3545 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
3547 if (create_options
& FILE_OPEN_BY_FILE_ID
) {
3548 status
= NT_STATUS_NOT_SUPPORTED
;
3552 if (create_options
& NTCREATEX_OPTIONS_INVALID_PARAM_MASK
) {
3553 status
= NT_STATUS_INVALID_PARAMETER
;
3558 oplock_request
|= INTERNAL_OPEN_ONLY
;
3561 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3562 && (access_mask
& DELETE_ACCESS
)
3563 && !is_ntfs_stream_smb_fname(smb_fname
)) {
3565 * We can't open a file with DELETE access if any of the
3566 * streams is open without FILE_SHARE_DELETE
3568 status
= open_streams_for_delete(conn
, smb_fname
->base_name
);
3570 if (!NT_STATUS_IS_OK(status
)) {
3575 if ((access_mask
& SEC_FLAG_SYSTEM_SECURITY
) &&
3576 !security_token_has_privilege(get_current_nttok(conn
),
3577 SEC_PRIV_SECURITY
)) {
3578 DEBUG(10, ("create_file_unixpath: open on %s "
3579 "failed - SEC_FLAG_SYSTEM_SECURITY denied.\n",
3580 smb_fname_str_dbg(smb_fname
)));
3581 status
= NT_STATUS_PRIVILEGE_NOT_HELD
;
3585 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
)
3586 && is_ntfs_stream_smb_fname(smb_fname
)
3587 && (!(private_flags
& NTCREATEX_OPTIONS_PRIVATE_STREAM_DELETE
))) {
3588 uint32 base_create_disposition
;
3589 struct smb_filename
*smb_fname_base
= NULL
;
3591 if (create_options
& FILE_DIRECTORY_FILE
) {
3592 status
= NT_STATUS_NOT_A_DIRECTORY
;
3596 switch (create_disposition
) {
3598 base_create_disposition
= FILE_OPEN
;
3601 base_create_disposition
= FILE_OPEN_IF
;
3605 /* Create an smb_filename with stream_name == NULL. */
3606 status
= create_synthetic_smb_fname(talloc_tos(),
3607 smb_fname
->base_name
,
3610 if (!NT_STATUS_IS_OK(status
)) {
3614 if (SMB_VFS_STAT(conn
, smb_fname_base
) == -1) {
3615 DEBUG(10, ("Unable to stat stream: %s\n",
3616 smb_fname_str_dbg(smb_fname_base
)));
3619 /* Open the base file. */
3620 status
= create_file_unixpath(conn
, NULL
, smb_fname_base
, 0,
3623 | FILE_SHARE_DELETE
,
3624 base_create_disposition
,
3625 0, 0, 0, 0, 0, NULL
, NULL
,
3627 TALLOC_FREE(smb_fname_base
);
3629 if (!NT_STATUS_IS_OK(status
)) {
3630 DEBUG(10, ("create_file_unixpath for base %s failed: "
3631 "%s\n", smb_fname
->base_name
,
3632 nt_errstr(status
)));
3635 /* we don't need to low level fd */
3640 * If it's a request for a directory open, deal with it separately.
3643 if (create_options
& FILE_DIRECTORY_FILE
) {
3645 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3646 status
= NT_STATUS_INVALID_PARAMETER
;
3650 /* Can't open a temp directory. IFS kit test. */
3651 if (!(file_attributes
& FILE_FLAG_POSIX_SEMANTICS
) &&
3652 (file_attributes
& FILE_ATTRIBUTE_TEMPORARY
)) {
3653 status
= NT_STATUS_INVALID_PARAMETER
;
3658 * We will get a create directory here if the Win32
3659 * app specified a security descriptor in the
3660 * CreateDirectory() call.
3664 status
= open_directory(
3665 conn
, req
, smb_fname
, access_mask
, share_access
,
3666 create_disposition
, create_options
, file_attributes
,
3671 * Ordinary file case.
3674 status
= file_new(req
, conn
, &fsp
);
3675 if(!NT_STATUS_IS_OK(status
)) {
3679 status
= fsp_set_smb_fname(fsp
, smb_fname
);
3680 if (!NT_STATUS_IS_OK(status
)) {
3686 * We're opening the stream element of a
3687 * base_fsp we already opened. Set up the
3690 fsp
->base_fsp
= base_fsp
;
3693 if (allocation_size
) {
3694 fsp
->initial_allocation_size
= smb_roundup(fsp
->conn
,
3698 status
= open_file_ntcreate(conn
,
3710 if(!NT_STATUS_IS_OK(status
)) {
3711 file_free(req
, fsp
);
3715 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_IS_A_DIRECTORY
)) {
3717 /* A stream open never opens a directory */
3720 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3725 * Fail the open if it was explicitly a non-directory
3729 if (create_options
& FILE_NON_DIRECTORY_FILE
) {
3730 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
3735 status
= open_directory(
3736 conn
, req
, smb_fname
, access_mask
,
3737 share_access
, create_disposition
,
3738 create_options
, file_attributes
,
3743 if (!NT_STATUS_IS_OK(status
)) {
3747 fsp
->base_fsp
= base_fsp
;
3749 if ((ea_list
!= NULL
) &&
3750 ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
))) {
3751 status
= set_ea(conn
, fsp
, fsp
->fsp_name
, ea_list
);
3752 if (!NT_STATUS_IS_OK(status
)) {
3757 if (!fsp
->is_directory
&& S_ISDIR(fsp
->fsp_name
->st
.st_ex_mode
)) {
3758 status
= NT_STATUS_ACCESS_DENIED
;
3762 /* Save the requested allocation size. */
3763 if ((info
== FILE_WAS_CREATED
) || (info
== FILE_WAS_OVERWRITTEN
)) {
3765 && (allocation_size
> fsp
->fsp_name
->st
.st_ex_size
)) {
3766 fsp
->initial_allocation_size
= smb_roundup(
3767 fsp
->conn
, allocation_size
);
3768 if (fsp
->is_directory
) {
3769 /* Can't set allocation size on a directory. */
3770 status
= NT_STATUS_ACCESS_DENIED
;
3773 if (vfs_allocate_file_space(
3774 fsp
, fsp
->initial_allocation_size
) == -1) {
3775 status
= NT_STATUS_DISK_FULL
;
3779 fsp
->initial_allocation_size
= smb_roundup(
3780 fsp
->conn
, (uint64_t)fsp
->fsp_name
->st
.st_ex_size
);
3783 fsp
->initial_allocation_size
= 0;
3786 if ((info
== FILE_WAS_CREATED
) && lp_nt_acl_support(SNUM(conn
)) &&
3787 fsp
->base_fsp
== NULL
) {
3790 * According to the MS documentation, the only time the security
3791 * descriptor is applied to the opened file is iff we *created* the
3792 * file; an existing file stays the same.
3794 * Also, it seems (from observation) that you can open the file with
3795 * any access mask but you can still write the sd. We need to override
3796 * the granted access before we call set_sd
3797 * Patch for bug #2242 from Tom Lackemann <cessnatomny@yahoo.com>.
3800 uint32_t sec_info_sent
;
3801 uint32_t saved_access_mask
= fsp
->access_mask
;
3803 sec_info_sent
= get_sec_info(sd
);
3805 fsp
->access_mask
= FILE_GENERIC_ALL
;
3807 if (sec_info_sent
& (SECINFO_OWNER
|
3811 status
= set_sd(fsp
, sd
, sec_info_sent
);
3814 fsp
->access_mask
= saved_access_mask
;
3816 if (!NT_STATUS_IS_OK(status
)) {
3819 } else if (lp_inherit_acls(SNUM(conn
))) {
3820 /* Inherit from parent. Errors here are not fatal. */
3821 status
= inherit_new_acl(fsp
);
3822 if (!NT_STATUS_IS_OK(status
)) {
3823 DEBUG(10,("inherit_new_acl: failed for %s with %s\n",
3825 nt_errstr(status
) ));
3830 DEBUG(10, ("create_file_unixpath: info=%d\n", info
));
3833 if (pinfo
!= NULL
) {
3837 smb_fname
->st
= fsp
->fsp_name
->st
;
3839 return NT_STATUS_OK
;
3842 DEBUG(10, ("create_file_unixpath: %s\n", nt_errstr(status
)));
3845 if (base_fsp
&& fsp
->base_fsp
== base_fsp
) {
3847 * The close_file below will close
3852 close_file(req
, fsp
, ERROR_CLOSE
);
3855 if (base_fsp
!= NULL
) {
3856 close_file(req
, base_fsp
, ERROR_CLOSE
);
3863 * Calculate the full path name given a relative fid.
3865 NTSTATUS
get_relative_fid_filename(connection_struct
*conn
,
3866 struct smb_request
*req
,
3867 uint16_t root_dir_fid
,
3868 const struct smb_filename
*smb_fname
,
3869 struct smb_filename
**smb_fname_out
)
3871 files_struct
*dir_fsp
;
3872 char *parent_fname
= NULL
;
3873 char *new_base_name
= NULL
;
3876 if (root_dir_fid
== 0 || !smb_fname
) {
3877 status
= NT_STATUS_INTERNAL_ERROR
;
3881 dir_fsp
= file_fsp(req
, root_dir_fid
);
3883 if (dir_fsp
== NULL
) {
3884 status
= NT_STATUS_INVALID_HANDLE
;
3888 if (is_ntfs_stream_smb_fname(dir_fsp
->fsp_name
)) {
3889 status
= NT_STATUS_INVALID_HANDLE
;
3893 if (!dir_fsp
->is_directory
) {
3896 * Check to see if this is a mac fork of some kind.
3899 if ((conn
->fs_capabilities
& FILE_NAMED_STREAMS
) &&
3900 is_ntfs_stream_smb_fname(smb_fname
)) {
3901 status
= NT_STATUS_OBJECT_PATH_NOT_FOUND
;
3906 we need to handle the case when we get a
3907 relative open relative to a file and the
3908 pathname is blank - this is a reopen!
3909 (hint from demyn plantenberg)
3912 status
= NT_STATUS_INVALID_HANDLE
;
3916 if (ISDOT(dir_fsp
->fsp_name
->base_name
)) {
3918 * We're at the toplevel dir, the final file name
3919 * must not contain ./, as this is filtered out
3920 * normally by srvstr_get_path and unix_convert
3921 * explicitly rejects paths containing ./.
3923 parent_fname
= talloc_strdup(talloc_tos(), "");
3924 if (parent_fname
== NULL
) {
3925 status
= NT_STATUS_NO_MEMORY
;
3929 size_t dir_name_len
= strlen(dir_fsp
->fsp_name
->base_name
);
3932 * Copy in the base directory name.
3935 parent_fname
= talloc_array(talloc_tos(), char,
3937 if (parent_fname
== NULL
) {
3938 status
= NT_STATUS_NO_MEMORY
;
3941 memcpy(parent_fname
, dir_fsp
->fsp_name
->base_name
,
3945 * Ensure it ends in a '/'.
3946 * We used TALLOC_SIZE +2 to add space for the '/'.
3950 && (parent_fname
[dir_name_len
-1] != '\\')
3951 && (parent_fname
[dir_name_len
-1] != '/')) {
3952 parent_fname
[dir_name_len
] = '/';
3953 parent_fname
[dir_name_len
+1] = '\0';
3957 new_base_name
= talloc_asprintf(talloc_tos(), "%s%s", parent_fname
,
3958 smb_fname
->base_name
);
3959 if (new_base_name
== NULL
) {
3960 status
= NT_STATUS_NO_MEMORY
;
3964 status
= filename_convert(req
,
3966 req
->flags2
& FLAGS2_DFS_PATHNAMES
,
3971 if (!NT_STATUS_IS_OK(status
)) {
3976 TALLOC_FREE(parent_fname
);
3977 TALLOC_FREE(new_base_name
);
3981 NTSTATUS
create_file_default(connection_struct
*conn
,
3982 struct smb_request
*req
,
3983 uint16_t root_dir_fid
,
3984 struct smb_filename
*smb_fname
,
3985 uint32_t access_mask
,
3986 uint32_t share_access
,
3987 uint32_t create_disposition
,
3988 uint32_t create_options
,
3989 uint32_t file_attributes
,
3990 uint32_t oplock_request
,
3991 uint64_t allocation_size
,
3992 uint32_t private_flags
,
3993 struct security_descriptor
*sd
,
3994 struct ea_list
*ea_list
,
3995 files_struct
**result
,
3998 int info
= FILE_WAS_OPENED
;
3999 files_struct
*fsp
= NULL
;
4001 bool stream_name
= false;
4003 DEBUG(10,("create_file: access_mask = 0x%x "
4004 "file_attributes = 0x%x, share_access = 0x%x, "
4005 "create_disposition = 0x%x create_options = 0x%x "
4006 "oplock_request = 0x%x "
4007 "private_flags = 0x%x "
4008 "root_dir_fid = 0x%x, ea_list = 0x%p, sd = 0x%p, "
4010 (unsigned int)access_mask
,
4011 (unsigned int)file_attributes
,
4012 (unsigned int)share_access
,
4013 (unsigned int)create_disposition
,
4014 (unsigned int)create_options
,
4015 (unsigned int)oplock_request
,
4016 (unsigned int)private_flags
,
4017 (unsigned int)root_dir_fid
,
4018 ea_list
, sd
, smb_fname_str_dbg(smb_fname
)));
4021 * Calculate the filename from the root_dir_if if necessary.
4024 if (root_dir_fid
!= 0) {
4025 struct smb_filename
*smb_fname_out
= NULL
;
4026 status
= get_relative_fid_filename(conn
, req
, root_dir_fid
,
4027 smb_fname
, &smb_fname_out
);
4028 if (!NT_STATUS_IS_OK(status
)) {
4031 smb_fname
= smb_fname_out
;
4035 * Check to see if this is a mac fork of some kind.
4038 stream_name
= is_ntfs_stream_smb_fname(smb_fname
);
4040 enum FAKE_FILE_TYPE fake_file_type
;
4042 fake_file_type
= is_fake_file(smb_fname
);
4044 if (fake_file_type
!= FAKE_FILE_TYPE_NONE
) {
4047 * Here we go! support for changing the disk quotas
4050 * We need to fake up to open this MAGIC QUOTA file
4051 * and return a valid FID.
4053 * w2k close this file directly after openening xp
4054 * also tries a QUERY_FILE_INFO on the file and then
4057 status
= open_fake_file(req
, conn
, req
->vuid
,
4058 fake_file_type
, smb_fname
,
4060 if (!NT_STATUS_IS_OK(status
)) {
4064 ZERO_STRUCT(smb_fname
->st
);
4068 if (!(conn
->fs_capabilities
& FILE_NAMED_STREAMS
)) {
4069 status
= NT_STATUS_OBJECT_NAME_NOT_FOUND
;
4074 if (is_ntfs_default_stream_smb_fname(smb_fname
)) {
4076 smb_fname
->stream_name
= NULL
;
4077 /* We have to handle this error here. */
4078 if (create_options
& FILE_DIRECTORY_FILE
) {
4079 status
= NT_STATUS_NOT_A_DIRECTORY
;
4082 if (lp_posix_pathnames()) {
4083 ret
= SMB_VFS_LSTAT(conn
, smb_fname
);
4085 ret
= SMB_VFS_STAT(conn
, smb_fname
);
4088 if (ret
== 0 && VALID_STAT_OF_DIR(smb_fname
->st
)) {
4089 status
= NT_STATUS_FILE_IS_A_DIRECTORY
;
4094 status
= create_file_unixpath(
4095 conn
, req
, smb_fname
, access_mask
, share_access
,
4096 create_disposition
, create_options
, file_attributes
,
4097 oplock_request
, allocation_size
, private_flags
,
4101 if (!NT_STATUS_IS_OK(status
)) {
4106 DEBUG(10, ("create_file: info=%d\n", info
));
4109 if (pinfo
!= NULL
) {
4112 return NT_STATUS_OK
;
4115 DEBUG(10, ("create_file: %s\n", nt_errstr(status
)));
4118 close_file(req
, fsp
, ERROR_CLOSE
);